Skylake/Z170 XMP Issues

I know this is a pretty common topic but nothing has seemed to work for me so far. I bought a 16GB TridentZ 3200MHz kit a little over a year ago and havent had any luck getting it to run at it's advertised speeds. I can get it to boot into windows with a couple small changes while running the XMP profile and setting it to its XMP settings manually, but both CPU-Z and Task Manager give me a reading of 2133MHz (1066MHz in CPU-Z). I have the ASUS Sabertooth Z170 S motherboard paired with a 6600k @ stock. I've set the CPU OV jumper to on even though that shouldnt matter, and also have switched from A1 B1 to A2 B2 and both DIMM pairs dont make a difference. I have very adequate cooling so I'm open to all suggestions as far as that goes. Thank you <3
Also: I'm able to get it to 2600MHz with minimal tweaking (only a boost to 1.25V on VCCIO boot, which is high but it boots)
Reply to dumbidiotxoxo
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More about skylake z170 xmp issues
  1. 2133 and 2400 are the only official speeds listed.

    https://www.asus.com/us/Motherboards/SABERTOOTH-Z170-S/specifications/
    4 x DIMM, Max. 64GB, DDR4 2400/2133 MHz Non-ECC, Un-buffered Memory
    Dual Channel Memory Architecture
    Supports Intel® Extreme Memory Profile (XMP)
    ** Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
    * Hyper DIMM support is subject to the physical characteristics of individual CPUs.
    Reply to SR-71 Blackbird
  2. SR-71 Blackbird said:
    2133 and 2400 are the only official speeds listed.

    https://www.asus.com/us/Motherboards/SABERTOOTH-Z170-S/specifications/
    4 x DIMM, Max. 64GB, DDR4 2400/2133 MHz Non-ECC, Un-buffered Memory
    Dual Channel Memory Architecture
    Supports Intel® Extreme Memory Profile (XMP)
    ** Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
    * Hyper DIMM support is subject to the physical characteristics of individual CPUs.

    Within the BIOS (which has been updated to latest firmware) its showing support for welllll over 3200MHz. Also, I was able to get it to 2600 like i said at the end of my post. Surely it's not a limitation by the board.
    Reply to dumbidiotxoxo
  3. Strange that they list it on the home page , I guess anything above 2400 is a bonus.
    Reply to SR-71 Blackbird
  4. SR-71 Blackbird said:
    Strange that they list it on the home page , I guess anything above 2400 is a bonus.


    QVL also lists supported speeds to 3466MHz. Although my memory F4-3200C16D isnt listed at all. feelsbadman. Thanks for the quick responses.

    If anyone else has suggestions I'm open to them, going to see if I can get in touch with ASUS and see what they say.
    Reply to dumbidiotxoxo
  5. Some higher speeds require OC on the CPU.
    Reply to SR-71 Blackbird
  6. SR-71 Blackbird said:
    Some higher speeds require OC on the CPU.


    I'll try to see what I can get out of the CPU then revisit the issue with RAM. I've only actually had access to this computer for about a week total so I wasn't able to really play with it. Thanks again :)
    Reply to dumbidiotxoxo
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