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Testing at x16, x8, x4, x1

03:10 - Wednesday 23 April 2008 by Patrick Schmid and Achim Roos
Source: Tom's Hardware – Keywords: pci, express, 2.0
Categories: Graphics

Testing at x16, x8, x4, x1

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pci express 2.0

You can limit PCI Express lane count by taping the connectors that aren’t required. Pay attention if you do so.

Once again we taped the pins we didn’t want when we wanted to narrow down the number of PCI Express 2.0 lanes used. No taping was required for x16 PCIe 2.0, while more and more of the 164 pins had to be taped to reduce the link width. If you do this, pay close attention to ensure that you cover the correct pins.

PCIe 2.0 x16

pci express 2.0

16 PCI Express 2.0 lanes equals the maximum link width of current PCI Express 2.0 graphics cards. The total bandwidth is 8 GB/s upstream and 8 GB/s downstream.

pci express 2.0

ATI’s Radeon HD 3850 running on 16 PCI Express 2.0 lanes.


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Talkback
mi1ez 24/04/2008 11:28
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mi1ez

The x1 mark is wrong in the diagram- it's the gap right after the key, not ON the key!

Anonymous 28/04/2008 12:15
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My nVidia GeForce 8800 GTS 512 is marketed as being PCIe 2.0. Why is this not listed?

spanner_razor 04/05/2008 09:53
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spanner_razor

Typo on the last page referring to 9800GX2 as 9900.

jeanpieterse 07/08/2008 05:23
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jeanpieterse

My nVidia GeForce 8800GS 384MB is marketed as being PCIe 2.0. Why is this not listed?

jodrummersh 17/10/2008 06:51
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jodrummersh

This article is terribly misleading and does not test what it promises. It's only purpose is to test PCIe 2.0 x16 against PCIe 2.0 x8, x4 and x1.

Woulda been nice if they actually tested PCIe 2.0 (x16) against PCIe 1.1 since this would actually be of some relevance and importance to us. Anyone else think so?

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