X299 Motherboards (LGA2066) Comparison Tables

A consolidated list of X299 motherboards for Intel Skylake-X and Kaby Lake-X CPUs for comparison of different motherboard brands and models. I have compiled all information to the best of my ability based on manufacturer's data, user manuals, and motherboard reviews, if there are discrepancies/errors, let me know. Specs compared include:

  • BIOS quantity (most have Dual-BIOS: a Main BIOS + a Backup BIOS, though, some have 3, while others still have 1)
  • VRM/Power Phases (VCC + VCCSA), excluding VCCM/VDDR and Heatsink info (all have heatsinks, but some perform better than others), and ATX12V Socket (pins) for power cable from PSU
  • Diagnostic/P.O.S.T.-State LEDs, if it has a 2-Digit Display Code or just simple LED indicators, or both (some models have other specialty LED indicators which were not listed due to space constraints)
  • RAM/DIMM Slots (incl. reinforcements, if any) and SATAIII (6Gbps) Ports (incl. ports oriented in a 90-degree layout for better data cable routing)
  • U.2 Ports (some are built-in ports, while some support optional U.2 kits) and M.2 (Key-M) Slots (incl. slots with heatsink/cover, and any other special M.2 slots/kits)
  • PCIe 3.0 x16 Slots (incl. reinforcements, if any), their Maximum Slot Speed (depending on CPU installed, whether 44x-, 28x-, or 16x-PCIe lane CPUs) and corresponding Multi-GPU support (Nvidia SLI or AMD CrossFire) as well as socket type (pins) for Additional PCIe Power (optional)
  • Other PCIe expansion slots such as PCIe 3.0/2.0 x1 and PCIe 3.0 x4, if any (note that some PCIe lanes share bandwidth with other slots, which I did not include in the tables due to space constraints). Refer to User Manuals for details.
  • Wi-Fi (includes Bluetooth), RJ-45 LAN Ports and Controller, and Audio Codec including number of ports (S/PDIF Optical Out and 3.5mm Jacks) at the rear panel
  • Clear CMOS and BIOS Flashback Buttons at the rear panel, if any
  • PS/2 Ports and USB Ports (incl. breakdown of each USB port type: USB3.1 Type-C, USB3.1 Type-A, USB3.0 Type-A and USB2.0 Type-A) at the rear panel
  • USB Internal Headers such as USB3.1 (20-pin), USB3.0 (19-pin), and USB2.0 (9-pin) (incl. those oriented in 90-degree layout for better cable routing), Thunderbolt AIC connector (5-pin), and Fan/Pump Headers (which all are hybrid PWM/DC 4-pin, unless otherwise stated)
  • 12V RGB LED Strip Headers (most are 4-pin [12V/G/R/B], while some, esp. in Gigabyte models, are 5-pin [12V/G/R/B]+[W]) for standard 5050 RGB strips
  • 5V RGB LED Strip Headers (Asus models are 4-1pin [5V/D/-/G] for exclusive RGB WS2812B LED strips, while Gigabyte models are all interchangeable (5V/12V) using either 3-pin [V/D/G] with a voltage selector jumper, or hybrid 5-pin [12V/D/G/D/5V] where LED strip must be correctly oriented to proper pin voltage, and supports standard 5050 RGB strips)
  • Armor/Shrouds (specifically, I/O and Audio Covers, plus any other covers/supports)
  • PCB Dimension (Form Factor and Actual Size) and Colors (general colors of mainboard and accents + ambient LED lighting color, if any)

The tables below are grouped by manufacturer. Models are sorted alphabetically in each table. Direct link to manufacturer's site, and user manuals, are included for reference.
___________________________________________________________________________

> ASROCK X299 MOTHERBOARDS <

(6 models listed: 5 ATX, 1 ITX)

+-------------+-+---------+-----+-----+-----+-+----------+--------------------------------------------------------+-------+-+---------+-----------+-------+-+-----------+------------------+-------+-----+----+-----+-------------+
|             |B|  POWER  |  2- | RAM |SATA3| |M.2[KEY-M]|       PCI-E 3.0 x16 (Underlined Slot = PCH)       ADD'L| OTHER |W|RJ45@REAR| AUDIO SP|J|BUTTONS|P|  USB  |U|U|HEADERS @ MIDBOARD|RGB LED|ARMOR|SIZE|PCB &|             |
|   BRAND /   |I|-----+---|DIGIT|Q+---|-----|U|------+---|Q+---++----+-----------------------------------------GPU| PCI-E |I|---------| @REAR |D|A| @REAR |S| @REAR |S|S|---+---+---+-+----| STRIP |  @  |Ht.x|ACCNT|   BRAND /   |
|    MODEL    |O|PHASE|ATX|DEBUG|T|RE-|(Qty.|2| QTY. |HT.|T|RE-||CPU |Max Speeds & Supported Multi-GPU Setups:|12V|3.0|3.0|F|   LAN   |-------|I|C|CL FLSH|/|TOT|3.1|B|B|USB|USB|USB|T|FAN/|HEADERS|I/O &|Wdth|+ LED|    MODEL    |
|             |S|(VCC)|12V| CODE|Y|INF|@90°)| |3.0 x4|SNK|Y|INF||Lane|     (Depends on CPU Lanes)     |SLI| CF|PWR| x1| x4|I|CNTROLLER| CODEC |F|K|CMOS BK|2|QTY|C|A|3|2|3.1|3.0|2.0|B|PUMP|12v|+5v|AUDIO|(mm)|COLOR|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asrock X299  | | 11  |   |     | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |1x I219V |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX|BK/GY|Asrock X299  |PRODUCT WEBSITE
|Fatal1ty     |2|(5*2 |1x8| YES |8|YES|(all)|P|  3x  | X |4|3/4||28x:|x16/x4/x8/-                     |2-w|2-w| - | 1 | 0 |-|1x I211AT|ALC1220|1|5|YES| - |1|10x|1|1|4|4| 0 |*1@| 3 |Y| 5x | 2 | - | YES |305x|  +  |Fatal1ty     |USER MANUAL (Version 1.0 May 2017)
|Gaming K6    | | +1) |   |     | |   |     |T|      |   | |   ||16x:|x16/x4/-/-, x8/x4/x8/-          |2-w|2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244| RGB |Gaming K6    |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asrock X299  | | 13  |   |     | |   | 10  |O|      |   | |   ||44x:|x16/x8/x16/-, x8/x8/x16/x8      |3-w|3-w|   | 1*|   | |1x AQC107|       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX|BK/GY|Asrock X299  |PRODUCT WEBSITE
|Fatal1ty Prof|2|(6*2 |1x8| YES |8|YES|(all)|P|  3x  | X |4|ALL||28x:|x16/-/x8/-, x8/-/x8/x8          |3-w|3-w| - |ver| 0 |Y|1x I219V |ALC1220|1|5|YES|YES|1| 8x|1|1|4|2| 1 |*1@| 2 |Y| 5x | 2 | - | YES |305x|  +  |Fatal1ty Prof|USER MANUAL (Version 1.0 June 2017)
|Gaming i9    | | +1) |   |     | |   |     |T|      |   | |   ||16x:|x16/-/-/-, x8/-/x4/-            | X |2-w|   |2.0|   | |1x I211AT|       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244| RGB |Gaming i9    |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asrock X299  | | 11  |   |  X* | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     | ATX|BK/GY|Asrock X299  |PRODUCT WEBSITE
|Killer SLI/ac|2|(5*2 |1x8|*LEDs|8| X |(all)|P|  3x  | X |4|2/4||28x:|x16/x4/x8/-                     |2-w|2-w| - | 1 | 0 |Y|1x I219V |ALC1220|1|5|YES| - |1|10x|1|1|4|4| 0 | 1 | 3 |Y| 5x | 2 | - | YES |305x|  +  |Killer SLI/ac|USER MANUAL (Version 1.0 May 2017)
|             | | +1) |   | only| |   |     |T|      |   | |   ||16x:|x16/x4/-/-, x8/x4/x8/-          |2-w|2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     | 244| RGB |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asrock X299  | | 13  |1x8|     | |   |  8  |O|      |   | |   ||44x:|x16/-/-/x16/x8, x8/x8/x8/x8/x8  |4-w|4-w|1x6| 1*|   | |1x I219V |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     | ATX|BK/GY|Asrock X299  |PRODUCT WEBSITE
|OC Formula   |2|(6*2 | + | YES |4| X |(all)|P|  2x  | X |5|ALL||28x:|x16/-/-/x8/x4, x8/x8/-/x8/x4    |3-w|4-w| @ |ver| 1 |-|1x I211AT|ALC1220|1|5|YES|YES|1| 8x|1|1|4|2| 1 | 1 | 2 |Y| 5x | 2 | - | YES |305x|  +  |OC Formula   |USER MANUAL (Version 1.0 August 2017)
|             | | +1) |1x4|     | |   |     |T|      |   | |   ||16x:|x16/-/-/-/x4, x8/-/-/x8/x4      |2-w|3-w|90°|2.0|   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     | 244| RGB |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asrock X299  | | 13  |   |     | |   | 10  |O|      |   | |   ||44x:|x16/x8/x16/-, x8/x8/x16/x8      |3-w|3-w|   | 1*|   | |1x I219V |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX|BK/GY|Asrock X299  |PRODUCT WEBSITE
|Taichi       |2|(6*2 |1x8| YES |8| X |(all)|P|  3x  | X |4|ALL||28x:|x16/-/x8/-, x8/-/x8/x8          |3-w|3-w| - |ver| 0 |Y|1x I211AT|ALC1220|1|5|YES|YES|1| 8x|1|1|4|2| 0 |*1@| 2 |Y| 5x | 2 | - | YES |305x|  +  |Taichi       |USER MANUAL (Version 1.0 July 2017)
|             | | +1) |   |     | |   |     |T|      |   | |   ||16x:|x16/-/-/-, x8/-/x4/-            | X |2-w|   |2.0|   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244| RGB |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asrock       | |  7  |   |     | | X |  6  | |  3x* |   | |   ||44x:|x16                             | X | X |   |   |   | |1x I219V |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     | ITX|BK/GY|Asrock       |REFERENCE ONLY
|X299E-ITX/AC |?|(6+1)|1x8|  X  |4*SO-|(0/6)|0|*2x is| X |1|ALL||28x:|x16                             | X | X | - | 0 | 0 |Y|1x I211AT|ALC1220|1|5|YES| - |0| 6x|1|1|4|0| 0 | 1 | 1 |?| 3x | 1 | - |  X  |    |     |X299E-ITX/AC |
|             | |     |   |     | DIMM|     | |@ Rear|   | |   ||16x:|x16                             | X | X |   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     |    |  -  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+

___________________________________________________________________________

> ASUS X299 MOTHERBOARDS <

(8 models listed: 2 EATX, 6 ATX)

+-------------+-+---------+-----+-----+-----+-+----------+--------------------------------------------------------+-------+-+---------+-----------+-------+-+-----------+------------------+-------+-----+----+-----+-------------+
|             |B|  POWER  |  2- | RAM |SATA3| |M.2[KEY-M]|       PCI-E 3.0 x16 (Underlined Slot = PCH)       ADD'L| OTHER |W|RJ45@REAR| AUDIO SP|J|BUTTONS|P|  USB  |U|U|HEADERS @ MIDBOARD|RGB LED|ARMOR|SIZE|PCB &|             |
|   BRAND /   |I|-----+---|DIGIT|Q+---|-----|U|------+---|Q+---++----+-----------------------------------------GPU| PCI-E |I|---------| @REAR |D|A| @REAR |S| @REAR |S|S|---+---+---+-+----| STRIP |  @  |Ht.x|ACCNT|   BRAND /   |
|    MODEL    |O|PHASE|ATX|DEBUG|T|RE-|(Qty.|2| QTY. |HT.|T|RE-||CPU |Max Speeds & Supported Multi-GPU Setups:|12V|3.0|3.0|F|   LAN   |-------|I|C|CL FLSH|/|TOT|3.1|B|B|USB|USB|USB|T|FAN/|HEADERS|I/O &|Wdth|+ LED|    MODEL    |
|             |S|(VCC)|12V| CODE|Y|INF|@90°)| |3.0 x4|SNK|Y|INF||Lane|     (Depends on CPU Lanes)     |SLI| CF|PWR| x1| x4|I|CNTROLLER| CODEC |F|K|CMOS BK|2|QTY|C|A|3|2|3.1|3.0|2.0|B|PUMP|12v|+5v|AUDIO|(mm)|COLOR|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus Prime   | |  8  |1x8|     | |   |  8  | |  2x* |   | |   ||44x:|x16/x16/x8                      |3-w|3-w|   |   |   | |         |  ALC  | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX|BK/WH|Asus Prime   |PRODUCT WEBSITE
|X299-A       |1|(7+1)| + | YES |8| X |(all)|0|*1x is|1/2|3|ALL||28x:|x16/x8/x1                       |2-w|2-w| - | 1 | 2 |-|1x I219V | S1220A|1|5| - |YES|0| 8x|1|1|4|2| 1 |*1@| 1 |Y| 7x | 2 | - | I/O |305x|GY/BL|X299-A       |USER MANUAL (E12782 First Edition June 2017 - 2017/06/20)
|             | |     |1x4|     | |   |     | |Vert'l|   | |   ||16x:|x16/-/x1, x8/x8/x1              |2-w|2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   | only| 244|+ RGB|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus Prime   | |  9  |1x8| YES | |   |  7  | |  2x* |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |1x I219V |  ALC  | | | @ |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX|BK/WH|Asus Prime   |PRODUCT WEBSITE
|X299-Deluxe  |1|(8+1)| + |+OLED|8| X |(6/7)|1|*1x is|1/2|4|3/4||28x:|x16/x4/x8/x2                    |2-w|2-w| - | 2 | 0 |Y|1x I211AT| S1220A|1|5|Ins|YES|0|12x|1|3|4|4| 1 |*1@| 1 |Y| 7x | 1 | 1 | YES |305x|LT.GY|X299-Deluxe  |USER MANUAL (E13088 Revised Edition V2 June 2017 - 2017/06/16)
|             | |     |1x4|LDash| |   |     | |Vert'l|   | |   ||16x:|x16/x1/-/x2, x8/x1/x8/x2        |2-w|2-w|   |   |   | |         |       | | |ide|   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus ROG     | | 10  |1x8|     | |   |  6  | |4x* *In 2x| |   ||44x:|x16/-/x16/-, x16/x8/x8/x8       |4-w|4-w|1x4|   |   | |         |Supreme| | |   |   | |   | | | | |   | 2 |   | |    |   |   |     |EATX| BK/ |Asus ROG     |PRODUCT WEBSITE
|Rampage VI   |2|(8+2)| + | YES |4|YES|(all)|0|DIMM.2 Kit|4|ALL||28x:|x16/-/x8/-, x8/x8/x8/-          |3-w|3-w| Mo| 0 | 1 |Y|1x I219V |   FX  |1|5|YES|YES|2|10x|1|1|6|2| 1 | @ | 2 |-|12x | 2 | - | I/O |305x|DK.GY|Rampage VI   |USER MANUAL (E13135 First Edition July 2017 - 2017/07/28)
|Apex         | |     |1x8|     | |   |     | | (w/ Fan) | |   ||16x:|x16/-/-/-, x8/-/x8/-            |2-w|2-w|lex|   |   | |         | S1220A| | |   |   | |   | | | | |   |90°|   | |    |   |   | only| 272|+ RGB|Apex         |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus ROG     | |  ?  |1x8|*LEDs| |   |  6  | |1x +2*|   | |   ||44x:|x16/-/x16/x8, x16/x8/x8/x8      |4-w|4-w|1x4|   |   | |1x AQC107|Supreme| | |   |   | |   | | | | |   | 2*|   | |    |   |   |     |EATX| BK/ |Asus ROG     |PRODUCT WEBSITE
|Rampage VI   |2| (8) | + |+OLED|8|YES|(all)|1|*In 1x|1/3|4|ALL||28x:|x16/-/x16/-, x8/x8/x8/-         |3-w|3-w| Mo| 0 | 1 |Y|1x I219V |   FX  |1|5|YES|YES|0|10x|1|1|8|0| 1 |*1@| 1 |Y| 8x | 2 | 1 | YES |305x|MD.GY|Rampage VI   |USER MANUAL (E12842 First Edition June 2017 - 2017/08/04)
|Extreme***   | |     |1x8|LDash| |   |     | |DIMM.2|   | |   ||16x:|N/A (***CPU NOT SUPPORTED***)   |N/A|N/A|lex|   |   | |         | S1220A| | |   |   | |   | | | | |   |90°|   | |    |   |   |+ GPU| 277|+ RGB|Extreme***   |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus ROG     | |  8  |1x8|     | |   |  8  | |  2x* |   | |   ||44x:|x16/x16/x8                      |3-w|3-w|   |   | 2*| |         |  ALC  | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Asus ROG     |PRODUCT WEBSITE
|Strix X299-E |1|(7+1)| + | YES |8| X |(all)|0|*1x is|1/2|3|ALL||28x:|x16/x8/x1                       |2-w|2-w| - | 1 |*1@|Y|1x I219V | S1220A|1|5| - |YES|0| 8x|1|1|4|2| 1 |*1@| 1 |-| 7x | 2 | 1 | YES |305x|DK.GY|Strix X299-E |USER MANUAL (E13180 Revised Edition V2 June 2017 - 2017/06/09)
|Gaming       | |     |1x4|     | |   |     | |Vert'l|   | |   ||16x:|x16/-/x1, x8/x8/x1              |2-w|2-w|   |   | x1| |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|Gaming       |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus ROG     | |  8  |1x8|     | |   |  8  | |  2x* |   | |   ||44x:|x16/x16/x8                      |3-w|3-w|   |   | 2*| |         |  ALC  | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Asus ROG     |PRODUCT WEBSITE
|Strix X299-XE|1|(7+1)| + | YES |8| X |(all)|0|*1x is|1/2|3|ALL||28x:|x16/x8/x1                       |2-w|2-w| - | 1 |*1@|Y|1x I219V | S1220A|1|5| - |YES|0| 8x|1|1|4|2| 1 |*1@| 1 |-| 7x | 2 | 1 | YES |305x|DK.GY|Strix X299-XE|USER MANUAL (E13291 First Edition August 2017 - 2017/08/22)
|Gaming       | |w/fan|1x4|     | |   |     | |Vert'l|   | |   ||16x:|x16/-/x1, x8/x8/x1              |2-w|2-w|   |   | x1| |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|Gaming       |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus TUF     | |  9  |1x8|  X* | |   |  8  | |  2x* |   |3|2/3||44x:|x16/x16/x8                      |3-w|3-w|   |   | 2*| |1x I219V |  ALC  | | |   |   | |   | | | | |   | 2*|   | |10x*|   |YES + GPU| ATX| BK/ |Asus TUF     |PRODUCT WEBSITE
|X299 Mark 1  |1|(8+1)| + |*LEDs|8| X |(all)|0|*1x is|1/2|+1GPU||28x:|x16/x8/x1                       |2-w|2-w| - | 0 |*1@|-|1x I211AT| S1220A|1|5| - |YES|0|10x|1|1|4|4| 1 |*1@| 1 |Y| *1@| 1 |w/Bkplate|305x|MD.GY|X299 Mark 1  |USER MANUAL (E12783 First Edition June 2017 - 2017/07/06)
|             | |     |1x4| only| |   |     | |Vert'l|   |Brckt||16x:|x16/-/x1, x8/x8/x1              |2-w|2-w|   |   | x1| |         |       | | |   |   | |   | | | | |   |90°|   | |5VDC|   |+ PCH Fan| 244|+ RGB|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Asus TUF     | |  8  |1x8|  X* | |   |  6  | |  2x* |   | |   ||44x:|x16/x16/x8                      |3-w|3-w|   |   | 1*| |         |  ALC  | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Asus TUF     |PRODUCT WEBSITE
|X299 Mark 2  |1|(7+1)| + |*LEDs|8| X |(all)|0|*1x is| X |3|2/3||28x:|x16/x8/-                        |2-w|2-w| - | 2 |*x2|-|1x I219V | S1220A|1|5| - | - |1|10x|0|2|4|4| 0 |*1@| 1 |Y| 8x | - | - | YES |305x|DK.GY|X299 Mark 2  |USER MANUAL (E12906 First Edition June 2017 - 2017/06/16)
|             | |     |1x4| only| |   |     | |Vert'l|   | |   ||16x:|x16/-/-, x8/x8/-                |2-w|2-w|   |   |max| |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
***Asus ROG Rampage VI Extreme only supports 44x-Lane (i9-79XX, 10-core and up) and 28x-Lane (i7-78XX, 6-core and up) Skylake-X CPUs.  It does not support 16x-Lane (i7-7740X or i5-7640X, 4-core) Kaby Lake-X CPUs.

___________________________________________________________________________

> BIOSTAR X299 MOTHERBOARDS <

(1 model listed: 1 EATX)

+-------------+-+---------+-----+-----+-----+-+----------+--------------------------------------------------------+-------+-+---------+-----------+-------+-+-----------+------------------+-------+-----+----+-----+-------------+
|             |B|  POWER  |  2- | RAM |SATA3| |M.2[KEY-M]|       PCI-E 3.0 x16 (Underlined Slot = PCH)       ADD'L| OTHER |W|RJ45@REAR| AUDIO SP|J|BUTTONS|P|  USB  |U|U|HEADERS @ MIDBOARD|RGB LED|ARMOR|SIZE|PCB &|             |
|   BRAND /   |I|-----+---|DIGIT|Q+---|-----|U|------+---|Q+---++----+-----------------------------------------GPU| PCI-E |I|---------| @REAR |D|A| @REAR |S| @REAR |S|S|---+---+---+-+----| STRIP |  @  |Ht.x|ACCNT|   BRAND /   |
|    MODEL    |O|PHASE|ATX|DEBUG|T|RE-|(Qty.|2| QTY. |HT.|T|RE-||CPU |Max Speeds & Supported Multi-GPU Setups:|12V|3.0|3.0|F|   LAN   |-------|I|C|CL FLSH|/|TOT|3.1|B|B|USB|USB|USB|T|FAN/|HEADERS|I/O &|Wdth|+ LED|    MODEL    |
|             |S|(VCC)|12V| CODE|Y|INF|@90°)| |3.0 x4|SNK|Y|INF||Lane|     (Depends on CPU Lanes)     |SLI| CF|PWR| x1| x4|I|CNTROLLER| CODEC |F|K|CMOS BK|2|QTY|C|A|3|2|3.1|3.0|2.0|B|PUMP|12v|+5v|AUDIO|(mm)|COLOR|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Biostar X299 | | 14  |   |     | |   |  4  | |      |   | |   ||44x:|x16/x16/x8/x4/x4/x4/x4          | ? | ? |   |   |   | |  Dual:  |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     |EATX|BK/YW|Biostar X299 |NEWS
|Racing GT9   |?|  ?  | ? | YES |8| ? |(all)|2|  1x  |ALL|7|ALL||28x:|?                               | ? | ? |1x6| 0 | 0 |Y|    ?    |   ?   |?|5| ? | ? |?| 7x|1|1|1|4| 0 | 2 | 2 |?| ?  | ? | ? | YES |    |GY/WH|Racing GT9   |REFERENCE ONLY
|             | |     |   |     | |   |     | |      |   | |   ||16x:|?                               | ? | ? |   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     |    |  ?  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+

___________________________________________________________________________

> EVGA X299 MOTHERBOARDS <

(3 models listed: 2 EATX, 1 mATX)

+-------------+-+---------+-----+-----+-----+-+----------+--------------------------------------------------------+-------+-+---------+-----------+-------+-+-----------+------------------+-------+-----+----+-----+-------------+
|             |B|  POWER  |  2- | RAM |SATA3| |M.2[KEY-M]|       PCI-E 3.0 x16 (Underlined Slot = PCH)       ADD'L| OTHER |W|RJ45@REAR| AUDIO SP|J|BUTTONS|P|  USB  |U|U|HEADERS @ MIDBOARD|RGB LED|ARMOR|SIZE|PCB &|             |
|   BRAND /   |I|-----+---|DIGIT|Q+---|-----|U|------+---|Q+---++----+-----------------------------------------GPU| PCI-E |I|---------| @REAR |D|A| @REAR |S| @REAR |S|S|---+---+---+-+----| STRIP |  @  |Ht.x|ACCNT|   BRAND /   |
|    MODEL    |O|PHASE|ATX|DEBUG|T|RE-|(Qty.|2| QTY. |HT.|T|RE-||CPU |Max Speeds & Supported Multi-GPU Setups:|12V|3.0|3.0|F|   LAN   |-------|I|C|CL FLSH|/|TOT|3.1|B|B|USB|USB|USB|T|FAN/|HEADERS|I/O &|Wdth|+ LED|    MODEL    |
|             |S|(VCC)|12V| CODE|Y|INF|@90°)| |3.0 x4|SNK|Y|INF||Lane|     (Depends on CPU Lanes)     |SLI| CF|PWR| x1| x4|I|CNTROLLER| CODEC |F|K|CMOS BK|2|QTY|C|A|3|2|3.1|3.0|2.0|B|PUMP|12v|+5v|AUDIO|(mm)|COLOR|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|EVGA X299    | |  9  |1x8|     | |   |  8  | |  2x  |   | |   ||44x:|?                               |4-w| ? |1x6|   |   | |  Dual:  |       | | |   |   | |   | | | | |   |   |   | |    |   |   | YES |EATX|GY/WH|EVGA X299    |NEWS
|Dark         |3|(4*2 | + | YES*|4| ? |(all)|2|(+ 1x |ALL|5| ? ||28x:|?                               | ? | ? | @ | 0 | 1 |Y|2x Intel | CA1032|?|?| ? | ? |?| 8x|1|1|6|0| 0 | 2 | 2 |-| ?  | ? | ? |w/PCH|    |DK.GY|Dark         |REFERENCE ONLY
|             | | +1) |1x8| *2x | |   |     | |Key-E)|   | |   ||16x:|?                               | ? | ? |90°|   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   | Fan |    |  ?  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|EVGA X299    | |  9  |1x8|     | |   |  8  | |  2x  |   | |   ||44x:|x16/-/x8/x8, x8/x8/-/x16        |3-w|3-w|1x6|   |   | |  Dual:  |       | | |   |   | |   | | | | |   | 1 |   | |    |   |   |     |EATX|GY/SV|EVGA X299    |NEWS
|FTW-K        |2|(4*2 | + | YES |8| ? |(all)|2|(+ 1x | X |4| ? ||28x:|x16/-/-/x8, x8/x8/-/x8          |3-w|3-w| @ | 1 | 1 |Y|1x I219V |ALC1150|1|5|YES| - |0| 8x|1|1|6|0| 0 | @ | 2 |-| 7x | 4 | - | YES |305x|LT.GY|FTW-K        |USER MANUAL (142-SX-E297)
|             | | +1) |1x8|     | |   |     | |Key-E)|   | |   ||16x:|x8/-/-/x8                       |2-w|2-w|90°|   |   | |1x E2500 |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 277| RGB |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|EVGA X299    | |  9  |   |     | |   |  6  | |  1x  |   | |   ||44x:|x16/x16/x4                      |2-w|2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   |     |mATX|GY/BK|EVGA X299    |PRODUCT WEBSITE
|Micro        |1|(4*2 |1x8| YES |4| ? |(all)|1|(+ 1x | X |3| ? ||28x:|x16/x8/x4                       |2-w|2-w| - | 0 | 0 |Y|1x I219V |ALC1150|1|5|YES| - |0| 8x|1|1|6|0| 0 | 1 | 2 |-| 6x | 1 | - | I/O |244x|LT.GY|Micro        |USER MANUAL (131-SX-E295)
|             | | +1) |   |     | |   |     | |Key-E)|   | |   ||16x:|x8/x8/x4                        |2-w|2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |   | only| 244|  ?  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+

___________________________________________________________________________

> GIGABYTE X299 MOTHERBOARDS <

(10 models listed: 10 ATX)

+-------------+-+---------+-----+-----+-----+-+----------+--------------------------------------------------------+-------+-+---------+-----------+-------+-+-----------+------------------+-------+-----+----+-----+-------------+
|             |B|  POWER  |  2- | RAM |SATA3| |M.2[KEY-M]|       PCI-E 3.0 x16 (Underlined Slot = PCH)       ADD'L| OTHER |W|RJ45@REAR| AUDIO SP|J|BUTTONS|P|  USB  |U|U|HEADERS @ MIDBOARD|RGB LED|ARMOR|SIZE|PCB &|             |
|   BRAND /   |I|-----+---|DIGIT|Q+---|-----|U|------+---|Q+---++----+-----------------------------------------GPU| PCI-E |I|---------| @REAR |D|A| @REAR |S| @REAR |S|S|---+---+---+-+----| STRIP |  @  |Ht.x|ACCNT|   BRAND /   |
|    MODEL    |O|PHASE|ATX|DEBUG|T|RE-|(Qty.|2| QTY. |HT.|T|RE-||CPU |Max Speeds & Supported Multi-GPU Setups:|12V|3.0|3.0|F|   LAN   |-------|I|C|CL FLSH|/|TOT|3.1|B|B|USB|USB|USB|T|FAN/|HEADERS|I/O &|Wdth|+ LED|    MODEL    |
|             |S|(VCC)|12V| CODE|Y|INF|@90°)| |3.0 x4|SNK|Y|INF||Lane|     (Depends on CPU Lanes)     |SLI| CF|PWR| x1| x4|I|CNTROLLER| CODEC |F|K|CMOS BK|2|QTY|C|A|3|2|3.1|3.0|2.0|B|PUMP|12v|+5v|AUDIO|(mm)|COLOR|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  9  |   |  X* | |   |  8  |O|      |   | |   ||44x:|N/A (***CPU NOT SUPPORTED***)   |N/A|N/A|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte     |PRODUCT WEBSITE
|X299 Aorus   |2|(4*2 |1x8|*LEDs|4| X |(all)|P|  2x  | X |3| X ||28x:|N/A (***CPU NOT SUPPORTED***)   |N/A|N/A| - | 2 | 0 |-|1x Intel |ALC1220|~|6| - | - |1| 8x|0|2|6|0| 0 | 2 | 2 |Y| 5x | 2 |5V/| I/O |305x|MD.GY|X299 Aorus   |USER MANUAL (Rev. 1001 12ME-X29ARGM-1001R - 2017/07/25)
|Gaming***    | | +1) |   | only| |   |     |T|      |   | |   ||16x:|x16/x8/x4                       |2-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V| only| 244|  -  |Gaming***    |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  9  |   |  X* | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte     |PRODUCT WEBSITE
|X299 Aorus   |2|(8+1)|1x8|*LEDs|8|YES|(all)|P|  2x  | X |5|2/5||28x:|x16/x4/x8/x4/-                  |2-w|2-w| - | 0 | 0 |-|1x Intel |ALC1220|~|6| - | - |1| 8x|1|1|6|0| 0 | 2 | 2 |Y| 8x | 2 |5V/| I/O |305x|  +  |X299 Aorus   |USER MANUAL (Rev. 1001 12ME-X29ARG3-1001R - 2017/07/03)
|Gaming 3     | |     |   | only| |   |     |T|      |   | |   ||16x:|x8/x4/x4/x4/-                   | X |2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V| only| 244| RGB |Gaming 3     |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  9  |   |  X* | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte     |PRODUCT WEBSITE
|X299 Aorus   |2|(8+1)|1x8|*LEDs|8|YES|(all)|P|  2x  |1/2|5|2/5||28x:|x16/x4/x8/x4/-                  |2-w|2-w| - | 0 | 0 |-|1x Intel |ALC1220|~|6| - | - |1| 8x|1|1|6|0| 0 | 2 | 2 |Y| 8x | 2 |5V/| I/O |305x|  +  |X299 Aorus   |USER MANUAL (Rev. 1001 12ME-X29AG3P-1001R - 2017/08/04)
|Gaming 3 Pro | |     |   | only| |   |     |T|      |   | |   ||16x:|x8/x4/x4/x4/-                   | X |2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V| only| 244| RGB |Gaming 3 Pro |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  9  |1x8|     | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |  Dual:  |       | | | @ |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte     |PRODUCT WEBSITE
|X299 Aorus   |2|(8+1)| + | YES |8|YES|(all)|P|  3x  |1/3|5|ALL||28x:|x16/x4/x8/x4/-, x8/x4/x8/x4/x8  |3-w|3-w| - | 0 | 0 |Y|1x Intel |ALC1220|1|5|Ins| - |1| 9x|1|4|4|0| 1 | 2 | 2 |Y| 8x | 2 |5V/| YES |305x|  +  |X299 Aorus   |USER MANUAL (Rev. 1001 12ME-X29ARG7-1001R - 2017/08/04)
|Gaming 7     | |     |1x8|     | |   |     |T|      |   | |   ||16x:|x8/x4/-/x4/-, x8/x4/x4/x4/-     | X |2-w|   |   |   | |1x E2500 |       | | |ide|   | |   | | | | |   |   |   | |    |   |12V|     | 244| RGB |Gaming 7     |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  9  |1x8|     | |   |  8  | |3x +1*|   | |   ||44x:|x16/x4/x16/x4/-, x8/x4/x16/x4/x8|3-w|3-w|   |   |   | |  Dual:  |       | | | @ |   | |   | | | | |   |   |   | |    |   | 1*| YES | ATX| BK/ |Gigabyte     |PRODUCT WEBSITE
|X299 Aorus   |2|(8+1)| + | YES |8|YES|(all)|1|*@PCIe|ALL|5|ALL||28x:|x16/x4/x8/x4/-, x8/x4/x8/x4/x8  |3-w|3-w| - | 0 | 0 |Y|1x Intel |ALC1220|1|5|Ins| - |1| 9x|1|4|4|0| 1 | 2 | 2 |Y| 8x | 2 |5V/|w/Bck|305x|DK.GY|X299 Aorus   |USER MANUAL (Rev. 1001 12ME-X29ARG9-1001R - 2017/07/10)
|Gaming 9     | |     |1x8|     | |   |     | |M2 AIC|   | |   ||16x:|x16/x4/-/x4/-, x8/x4/x8/x4/-    |2-w|2-w|   |   |   | |1x E2500 |       | | |ide|   | |   | | | | |   |   |   | |    |   |12V|plate| 244|+ RGB|Gaming 9     |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte X299| |  9  |1x8|  X* | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte X299|PRODUCT WEBSITE
|Aorus Ultra  |2|(8+1)| + |*LEDs|8|YES|(all)|P|  3x  |1/3|5|ALL||28x:|x16/x4/x8/x4/-, x8/x4/x8/x4/x8  |3-w|3-w| - | 0 | 0 |-|1x Intel |ALC1220|~|6| - | - |1| 9x|1|4|4|0| 1 | 2 | 2 |Y| 8x | 2 |5V/| I/O |305x|SV/GY|Aorus Ultra  |USER MANUAL (Rev. 1001 12ME-X29ARUG-1001R - 2017/06/28)
|Gaming       | |     |1x8| only| |   |     |T|      |   | |   ||16x:|x8/x4/x4/x4/-                   | X |2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V| only| 244|+ RGB|Gaming       |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte X299| |  9  |1x8|  X* | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte X299|PRODUCT WEBSITE
|Aorus Ultra  |2|(8+1)| + |*LEDs|8|YES|(all)|P|  3x  |1/3|5|ALL||28x:|x16/x4/x8/x4/-, x8/x4/x8/x4/x8  |3-w|3-w| - | 0 | 0 |Y|1x Intel |ALC1220|~|6| - | - |1| 9x|1|4|4|0| 1 | 2 | 2 |Y| 8x | 2 |5V/| I/O |305x|SV/GY|Aorus Ultra  |USER MANUAL (Rev. 1001 12ME-X29ARGP-1001R - 2017/08/01)
|Gaming Pro   | |     |1x8| only| |   |     |T|      |   | |   ||16x:|x8/x4/x4/x4/-                   | X |2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V| only| 244|+ RGB|Gaming Pro   |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  8  |   |  X* | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte     |PRODUCT WEBSITE
|X299 UD4     |2|(7+1)|1x8|*LEDs|8| X |(all)|P|  2x  | X |5| X ||28x:|x16/x4/x8/x4/-                  |2-w|2-w| - | 0 | 0 |-|1x Intel |ALC1220|~|6| - | - |1| 8x|0|2|6|0| 0 | 2 | 2 |Y| 5x | 2 |5V/|  X  |305x|GY/WH|X299 UD4     |USER MANUAL (Rev. 1001 12ME-X29SUD4-1001R - 2017/07/03)
|             | |     |   | only| |   |     |T|      |   | |   ||16x:|x8/x4/x4/x4/-                   | X |2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V|     | 244|  -  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  8  |   |  X* | |   |  8  | |      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX| GY/ |Gigabyte     |PRODUCT WEBSITE
|X299 UD4 EX  |2|(7+1)|1x8|*LEDs|8| X |(all)|1|  2x  | X |5| X ||28x:|x16/x4/x8/x4/-                  |2-w|2-w| - | 0 | 0 |-|1x Intel |ALC1220|~|6| - | - |1| 8x|0|2|6|0| 0 | 2 | 2 |Y| 5x | 2 |5V/| I/O |305x|BK/WH|X299 UD4 EX  |USER MANUAL (Rev. 1001 12ME-X29UD4E-1001R - 2017/08/17)
|             | |     |   | only| |   |     | |      |   | |   ||16x:|x8/x4/x4/x4/-                   | X |2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V| only| 244|  -  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Gigabyte     | |  8  |   |  X* | |   |  8  |O|      |   | |   ||44x:|x16/x4/x16/x4/x8                |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   | 1*|     | ATX|BK/GY|Gigabyte     |PRODUCT WEBSITE
|X299 UD4 Pro |2|(7+1)|1x8|*LEDs|8| X |(all)|P|  2x  | X |5| X ||28x:|x16/x4/x8/x4/-                  |2-w|2-w| - | 0 | 0 |-|1x Intel |ALC1220|~|6| - | - |1| 8x|0|2|6|0| 0 | 2 | 2 |Y| 5x | 2 |5V/| I/O |305x|GY/WH|X299 UD4 Pro |USER MANUAL (Rev. 1001 12ME-X29UD4P-1001R - 2017/08/03)
|             | |     |   | only| |   |     |T|      |   | |   ||16x:|x8/x4/x4/x4/-                   | X |2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |   |   | |    |   |12V| only| 244|  -  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
***Gigabyte X299 Aorus Gaming only supports 16x-Lane (i7-7740X or i5-7640X, 4-core) Kaby Lake-X CPUs.  It does not support 44x-Lane (i9-79XX, 10-core and up) and 28x-Lane (i7-78XX, 6-core and up) Skylake-X CPUs.

___________________________________________________________________________

> MSI X299 MOTHERBOARDS <

(11 models listed: 1 EATX, 8 ATX, 2 mATX)

+-------------+-+---------+-----+-----+-----+-+----------+--------------------------------------------------------+-------+-+---------+-----------+-------+-+-----------+------------------+-------+-----+----+-----+-------------+
|             |B|  POWER  |  2- | RAM |SATA3| |M.2[KEY-M]|       PCI-E 3.0 x16 (Underlined Slot = PCH)       ADD'L| OTHER |W|RJ45@REAR| AUDIO SP|J|BUTTONS|P|  USB  |U|U|HEADERS @ MIDBOARD|RGB LED|ARMOR|SIZE|PCB &|             |
|   BRAND /   |I|-----+---|DIGIT|Q+---|-----|U|------+---|Q+---++----+-----------------------------------------GPU| PCI-E |I|---------| @REAR |D|A| @REAR |S| @REAR |S|S|---+---+---+-+----| STRIP |  @  |Ht.x|ACCNT|   BRAND /   |
|    MODEL    |O|PHASE|ATX|DEBUG|T|RE-|(Qty.|2| QTY. |HT.|T|RE-||CPU |Max Speeds & Supported Multi-GPU Setups:|12V|3.0|3.0|F|   LAN   |-------|I|C|CL FLSH|/|TOT|3.1|B|B|USB|USB|USB|T|FAN/|HEADERS|I/O &|Wdth|+ LED|    MODEL    |
|             |S|(VCC)|12V| CODE|Y|INF|@90°)| |3.0 x4|SNK|Y|INF||Lane|     (Depends on CPU Lanes)     |SLI| CF|PWR| x1| x4|I|CNTROLLER| CODEC |F|K|CMOS BK|2|QTY|C|A|3|2|3.1|3.0|2.0|B|PUMP|12v|+5v|AUDIO|(mm)|COLOR|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | | 11  |1x8|     | |   |  8  | |  2x  |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |         | Dual: | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX|BK/SV|Msi X299     |PRODUCT WEBSITE
|Gaming M7    |2|(5*2 | + | YES |8|YES|(6/8)|1|(+ 1x |ALL|4|ALL||28x:|x16/x4/x8/-, x8/x4/x8/x8        |3-w|3-w| - | 2 | 0 |Y|1x E2500 |ALC1220|1|5|YES|YES|1| 9x|1|1|4|3| 1 |*1@| 2 |-| 6x | 1 | - | YES |305x|LT.GY|Gaming M7    |USER MANUAL (7A90v1.1)
|ACK          | | +1) |1x4|     | |   |     | |Key-E)|   | |   ||16x:|x8/x4/x4/-, x8/-/x8/-           |2-w|2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|ACK          |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | | 11  |1x8|     | |   |  8  | |  2x  |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   |O|         |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Msi X299     |PRODUCT WEBSITE
|Gaming Pro   |2|(5*2 | + | YES |8|YES|(6/8)|1|(+ 1x |ALL|4|ALL||28x:|x16/x4/x8/-, x8/x4/x8/x8        |3-w|3-w| - | 2 | 0 |P|1x I219V |ALC1220|1|5|YES|YES|1| 9x|1|1|4|3| 1 |*1@| 2 |-| 6x | 1 | - | YES |305x|GY/WH|Gaming Pro   |USER MANUAL (E7A95v1.1)
|Carbon       | | +1) |1x4|     | |   |     | |Key-E)|   | |   ||16x:|x8/x4/x4/-, x8/-/x8/-           |2-w|2-w|   |   |   |T|         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|Carbon       |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | | 11  |1x8|     | |   |  8  | |  2x  |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Msi X299     |PRODUCT WEBSITE
|Gaming Pro   |2|(5*2 | + | YES |8|YES|(6/8)|1|(+ 1x |ALL|4|ALL||28x:|x16/x4/x8/-, x8/x4/x8/x8        |3-w|3-w| - | 2 | 0 |Y|1x I219V |ALC1220|1|5|YES|YES|1| 9x|1|1|4|3| 1 |*1@| 2 |-| 6x | 1 | - | YES |305x|GY/WH|Gaming Pro   |USER MANUAL (E7A95v1.1)
|Carbon AC    | | +1) |1x4|     | |   |     | |Key-E)|   | |   ||16x:|x8/x4/x4/-, x8/-/x8/-           |2-w|2-w|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|Carbon AC    |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | |  9  |   |  X* | |   |  8  | |      |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Msi X299     |PRODUCT WEBSITE
|Raider       |2|(4*2 |1x8|*LEDs|8| X |(6/8)|1|  2x  | X |4|1/4||28x:|x16/x4/x8/x4                    |2-w|3-w| - | 1 | 0 |-|1x I219V |ALC1220|1|5|YES| - |1|10x|1|1|4|4| 1 |*1@| 2 |Y| 6x | 1 | - |  X  |305x|DK.GY|Raider       |USER MANUAL (E7A94v1.1)
|             | | +1) |   | only| |   |     | |      |   | |   ||16x:|x8/x4/x8/-, x8/x4/x4/x4         |2-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|  -  |             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | |  9  |   |     | |   |  8  | |      |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |1x I219V |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Msi X299     |PRODUCT WEBSITE
|SLI Plus     |2|(4*2 |1x8| YES |8| X |(6/8)|1|  2x  |1/2|4|2/4||28x:|x16/x4/x8/x4                    |2-w|3-w| - | 2 | 0 |-|1x I211AT|ALC1220|1|5|YES|YES|1|10x|1|1|4|4| 1 |*1@| 2 |Y| 6x | 1 | - | YES |305x|DK.GY|SLI Plus     |USER MANUAL (E7A93v1.1)
|             | | +1) |   |     | |   |     | |      |   | |   ||16x:|x8/x4/x8/-, x8/x4/x4/x4         |2-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | |  9  |   |     | |   |  8  | |  2x  |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   |O|         |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Msi X299     |PRODUCT WEBSITE
|Tomahawk     |2|(4*2 |1x8| YES |8| X |(6/8)|1|(+ 1x |1/2|4|2/4||28x:|x16/x4/x8/x4                    |2-w|3-w| - | 2 | 0 |P|1x I219V |ALC1220|1|5|YES|YES|1| 9x|1|1|4|3| 1 |*1@| 2 |Y| 6x | 1 | - | YES |305x|LT.GY|Tomahawk     |USER MANUAL (E7B05v1.1)
|             | | +1) |   |     | |   |     | |Key-E)|   | |   ||16x:|x8/x4/x8/-, x8/x4/x4/x4         |2-w|3-w|   |   |   |T|         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | |  9  |   |     | |   |  8  | |  2x  |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX| BK/ |Msi X299     |PRODUCT WEBSITE
|Tomahawk AC  |2|(4*2 |1x8| YES |8| X |(6/8)|1|(+ 1x |1/2|4|2/4||28x:|x16/x4/x8/x4                    |2-w|3-w| - | 2 | 0 |Y|1x I219V |ALC1220|1|5|YES|YES|1| 9x|1|1|4|3| 1 |*1@| 2 |Y| 6x | 1 | - | YES |305x|LT.GY|Tomahawk AC  |USER MANUAL (E7B05v1.1)
|             | | +1) |   |     | |   |     | |Key-E)|   | |   ||16x:|x8/x4/x8/-, x8/x4/x4/x4         |2-w|3-w|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|             |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | |  9  |   |     | |   |  8  | |  2x  |   | |   ||44x:|x16/x4/x16/x8                   |3-w|3-w|   |   |   |O|         |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     | ATX|WH/GY|Msi X299     |PRODUCT WEBSITE
|Tomahawk     |2|(4*2 |1x8| YES |8|YES|(6/8)|1|(+ 1x |1/2|4|2/4||28x:|x16/x4/x8/x4                    |2-w|3-w| - | 2 | 0 |P|1x I219V |ALC1220|1|5|YES|YES|1| 9x|1|1|4|3| 1 |*1@| 2 |Y| 6x | 1 | - | YES |305x|BK/BG|Tomahawk     |USER MANUAL (E7B05v2.1)
|Arctic       | | +1) |   |     | |   |     | |Key-E)|   | |   ||16x:|x8/x4/x8/-, x8/x4/x4/x4         |2-w|3-w|   |   |   |T|         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|+ RGB|Arctic       |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299     | | 13  |1x8|     | |   | 10  | |3x +2*|   | |   ||44x:|x16/-/x16/x8, x8/x8/x16/x8      |4-w|4-w|1x4|   |   | |1x I219V |       | | |   |   | |   | | | | |   | 2*|   | |    |   |     YES |EATX| BK/ |Msi X299     |PRODUCT WEBSITE
|Xpower       |2|(6*2 | + | YES |8|YES|(all)|1|*@PCIe|ALL|4|ALL||28x:|x16/-/x8/x4, x8/x8/x8/x4        |3-w|3-w| Mo| 1 | 0 |Y|1x I211AT|ALC1220|1|5|YES|YES|1|10x|1|1|6|2| 1 |*1@| 2 |-|10x | 1 |w/Partial|305x|DK.GY|Xpower       |USER MANUAL (7A91v1.0)
|Gaming AC    | | +1) |1x4|     | |   |     | |M2 AIC|   | |   ||16x:|x8/-/x4/x4                      | X | X |lex|   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   | Bckplate| 272|+ RGB|Gaming AC    |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi          | | 10  |   |  X* | |   |  8  | |  2x  |   | |   ||44x:|N/A (***CPU NOT SUPPORTED***)   |N/A|N/A|   |   |   |O|         |       | | |   |   | |   | | | | |   | 2*|   | |    |   |   |     |mATX| BK/ |Msi          |PRODUCT WEBSITE
|X299M-A      |2|  ?  |1x8|*LEDs|4| X |(all)|0|(+ 1x | X |3|1/3||28x:|N/A (***CPU NOT SUPPORTED***)   |N/A|N/A|1x6| 0 | 0 |P|1x I219V |ALC1220|1|5| - | - |2| 8x|1|1|4|2| 0 |*1@| 2 |-| 5x | 1 | - |  X  |244x|DK.GY|X299M-A      |USER MANUAL (E7B40v1.0)
|Pro***       | |     |   | only| |   |     | |Key-E)|   | |   ||16x:|x16/-/-, x8/x8/-, x8/x4/x4      |2-w|2-w|   |   |   |T|         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   |     | 244|  -  |Pro***       |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
|Msi X299M    | |  9  |   |     | |   |  8  | |  2x  |   | |   ||44x:|x16/x16/x8                      |2-w|2-w|   |   |   | |1x I219V |       | | |   |   | |   | | | | |   | 1 |   | |    |   |   |     |mATX| BK/ |Msi X299     |PRODUCT WEBSITE
|Gaming Pro   |2|(4*2 |1x8| YES |4| X |(all)|0|(+ 1x |1/2|3|2/3||28x:|x16/x8/x4                       |2-w|3-w|1x6| 0 | 0 |Y|1x I211AT|ALC1220|1|5|YES|YES|1| 8x|1|1|4|2| 1 | @ | 2 |-| 5x | 1 | - | I/O |244x|GY/WH|Gaming Pro   |USER MANUAL (E7B06v1.1)
|Carbon AC*** | | +1) |   |     | |   |     | |Key-E)|   | |   ||16x:|N/A (***CPU NOT SUPPORTED***)   |N/A|N/A|   |   |   | |         |       | | |   |   | |   | | | | |   |90°|   | |    |   |   | only| 244|+ RGB|Carbon AC*** |
+-------------+-+-----+---+-----+-+---+-----+-+------+---+-+---++----+--------------------------------+---+---+---+---+---+-+---------+-------+-+-+---+---+-+---+-+-+-+-+---+---+---+-+----+---+---+-----+----+-----+-------------+
***Msi X299M-A Pro only supports 16x-Lane (i7-7740X or i5-7640X, 4-core) Kaby Lake-X CPUs.  It does not support 44x-Lane (i9-79XX, 10-core and up) and 28x-Lane (i7-78XX, 6-core and up) Skylake-X CPUs.
***Msi X299M Gaming Pro Carbon AC only supports 44x-Lane (i9-79XX, 10-core and up) and 28x-Lane (i7-78XX, 6-core and up) Skylake-X CPUs.  It does not support 16x-Lane (i7-7740X or i5-7640X, 4-core) Kaby Lake-X CPUs.


Updated: 04 October 2017
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