Benchmark Results: F1 2010
Anyone looking for the perfect example of a bandwidth-limited game couldn’t do much better than F1 2010. The GeForce GTX 570 drops performance by a whopping 18% in PCIe x4 mode, while the Radeon HD 6950 loses an even more astounding 38% in the same switch.
Even at the GPU-bottlenecked 2560x1600 resolution, a x4 slot hurts the AMD card’s performance by around 20%. The Nvidia sample shortens the gap to a still-significant 10%.
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These tests were done with a single card, on X16/X8/X4 slots. Fine.Reply
But... Who would use anything other than a X16 slot if they had one?
The only real use for a X8 slot would be for sli/crossfire where the addition of a second card should result in an Increase of performance, not a decrease.
it would be nice if you included the GTX 570 in the x8/x8 and x16/x4 test. the 570 flies over the 6950 on the single card config but i was curious how it would do since i think the AMD's scale better than nvidia's. would the 570 still lead because of its advantage? or would AMD even it out because of its scaling (if any) "advantage"Reply
^They already did an article on that manReply
Can you guy's do an article on how performance is affected if you SLI/Xfire using PCI-E 16x slots running @ 4x?Reply
3 way would be preferable because if performance is still adequately faster I'll consider it.
Good comments. Can we please see 8x/8x and 16x/4x since that comparison is relevant? I get the impression that somehow SLI/crossfire reduces the performance hit of x4 lanes but I'd like to see numbers.Reply
joytech22Can you guy's do an article on how performance is affected if you SLI/Xfire using PCI-E 16x slots running @ 4x?I think you missed a page then!Reply
The numbers were there all along!
carlhenryit would be nice if you included the GTX 570 in the x8/x8 and x16/x4 test.Well, you should probably read the linked page too then. There's no point in artifically creating a configuration (by taping lanes or whatever) that doesn't exist in real life, is there?
"While Nvidia prevents SLI from functioning on PCH-hosted lanes, x16/x4 configurations are completely possible in CrossFire. But should they be? We tested our motherboard in both x8/x8 and x16/x4 configurations to find out."
dalauderYeah...my bad.I didn't mean to call you out to that extent, here's a link to the forum part of this thread:Reply
I'm going there to delete your quote from my response.
Looking forward to see the third article!Reply
Im guessing that 8x lanes are mostly enought. I do belive that it would depend on how fast an actual gpu is, as well as how much ram it has, and how big is its bandwidth.Reply
I means, its logical, but mayb not true :D. Would be nice to see this test on a GTX560 Ti, since it has a lot of headroom for OC, then compare oced version vs non oced. Also this might be interesting in GPUs that have diffrent versions with more and less RAM.
Just my 2 cents :D.