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##testing## pci-e 2.0 X16 vs. pci-e 2.0 X8

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#27
AGP X8 = PCIe 2.0 x4
That equation requires that BOTH the chipset AND the GPU are running PCIe v2.0

If either or both of them are still PCIe v1.1 then AGP x8 = PCIe x8.

Actually, AGP x8 is about 10% faster than PCIe x8 for GPU tasks (One way communication). A small number, therefore moot.
 

Kwod

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#28
I dont think Tweaktown lied... I just think they were very quick to point out how slow the p45 is.. There is also a chance that the p45 board they used simply needed work and didnt handle the DDR3 bandwidth very well..
You might be right, but I think the key to good XF performance is to use P45,X38,X48 and 1 gig cards, cause even a 4850 1 gig will beat a 4870 512 at hi-res on some games.....probably Crysis, Grid and maybe StalkerCS.
 
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#30
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#32
Isn't the comparison supposed to be between PCI E 2 x8 and PCI E 1.1 x16?