Tom's Hardware > Forum > Motherboards & Memory > Asus > 2nd card in crossfire only shows x8 on asus ws revolution board

2nd card in crossfire only shows x8 on asus ws revolution board

Forum Motherboards & Memory : Asus - 2nd card in crossfire only shows x8 on asus ws revolution board

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atom281   08-03-2009 at 04:29:47 PM

have two matching cards, in slots one and three, which the user guide says will both do x16, but the second card in the catalyst software only shows the bus speed at x8. how do I get it to the full x16 speed?
thanks in advance


Message edited by atom281 on 08-04-2009 at 12:04:00 AM
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r_manic   08-04-2009 at 12:16:24 PM
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That really depends on your motherboard, as some of them only feature one x16 PCIe expansion slot. So it's possible that one card is running slower, bottlenecked by the max 8x support. Check your mobo's specs.

------------------------------ Desktop | E7300 | P5KPL-AM | 2GB DDR2 667MHz | NVIDIA 9500 GT | ST3320613AS | w2228h
XPS M1330 | T8300 | Dell 0U8042 | 2GB DDR2 800MHz | NVIDIA 8400M GS | WD2500BEVS-75US | 1280 x 800
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jitpublisher   08-04-2009 at 02:27:04 PM
- 0 +

Here is what your board supports.
2 x PCIe 2.0 x16 slots (at x16 or x8 mode)
1 x PCIe 2.0 x16 slots (at x16 mode)
2 x PCIe 2.0 x16 slots (at x8 mode)
1 x PCIe 2.0 x16 slot (at x4 mode)
* True @ x16 3-Way SLI™ in slots 1, 3 and 5 when slots 2 and 4 are not occupied
You likely have the cards in the wrong 2 slots or your slots are not configured correctly in your BIOS. Read your manual.

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atom281   08-04-2009 at 03:38:53 PM
- 0 +

yep... that was a pretty silly mistake... the second card was in the 4th slot, not the 3rd, i should have checked the label and not just thought it was another blue slot

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