NVIDIA Single Card, Multi-GPU: GeForce 7950 GX2
by Derek Wilson on June 5, 2006 12:00 PM EST- Posted in
- GPUs
Quake 4 Performance
With Quake 4, low resolutions are very CPU limited, but we can start to see the advantage of 7950 GX2 when AA is enabled. Quake 4 scales very well on multi-GPU solutions, so its expected that the 7950 GX2 should come out on top in this benchmark.
Moving on, our theories are confirmed: the 7950 GX2 continues to remain that the top of the list in terms of average frame rate under Quake 4. Enabling AA is still necessary for the advantage to become significant, but the gap between the new fastest single card and the rest of the pack is definitely increasing.
At 2048x1536, even without AA the 7950 GX2 shows an 18% advantage over the next fastest single PCIe slot solution. Enabling 4xAA instantly boosts that lead to over 43%. In fact, running at 2048x1536 with 4xAA rather than one of the CPU limited resolutions on a 7950 GX2 will only cost you about 28% in performance over all.
With Quake 4, low resolutions are very CPU limited, but we can start to see the advantage of 7950 GX2 when AA is enabled. Quake 4 scales very well on multi-GPU solutions, so its expected that the 7950 GX2 should come out on top in this benchmark.
Moving on, our theories are confirmed: the 7950 GX2 continues to remain that the top of the list in terms of average frame rate under Quake 4. Enabling AA is still necessary for the advantage to become significant, but the gap between the new fastest single card and the rest of the pack is definitely increasing.
At 2048x1536, even without AA the 7950 GX2 shows an 18% advantage over the next fastest single PCIe slot solution. Enabling 4xAA instantly boosts that lead to over 43%. In fact, running at 2048x1536 with 4xAA rather than one of the CPU limited resolutions on a 7950 GX2 will only cost you about 28% in performance over all.
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Exsomnis - Monday, June 5, 2006 - link
Since when did slapping two PCBs together = single card? *Confused.*z3R0C00L - Monday, June 5, 2006 - link
Marketing Gimmick...It's two GPU's. It's SLI. The Fastest Single VPU/GPU solution is the x1900XTX (not tested here).
The most advanced GPU/VPU is the x1900XTX as well.
I wonder if these crds will also suffer from the 50% failure rate other 7900 series cards suffer from.
Jojo7 - Monday, June 5, 2006 - link
Haha. 50% failure rate. That's comedy.Where'd you pull that number from?
Hardocp said BFG reported 3-5%, Evga reported .04-1.9%, XFX said in the last 2 weeks they reported a .5% (half of one percent) increase in RMA's.
Yea. That seems like 50% to me.
Xenoid - Monday, June 5, 2006 - link
50% failure rate might be bullshit but the fact that you completely ignored the other half of his message is also bullshit fanboy-ism.The X1900 XTX isn't on here. The X1900 XT Crossfire isn't on here either, but the 7900 GT SLI is. This review is missing 2 of the top video cards, and for what reason? It makes this review incomplete and this should be addressed.
Jojo7 - Monday, June 5, 2006 - link
Actually, I agree with both of your points. The x1900 XTX should have been included in this review in both crossfire and single card. To the same end, the 7900 GTX in sli should have been included imo.
Noise comparisons and power draws would have been nice as well.
DerekWilson - Monday, June 5, 2006 - link
this does touch on our motivation --the 7950 GX2 is a single board solution (for those uncomortable with the inclusion of 2 PCBs, think of one as a daughterboard or something). We wanted to really focus on the comparison to other single board solutions.
Right now x1900 crossfire and 7900 gtx sli are over $1000 investments, and don't really compete with the 7950 GX2 -- unless we look at the 7950 GX2 in SLI. As we couldn't get quad SLI on the 7950 GX2 working for this article, we decided we save the comparison to that copetition later. It does seem pretty clear fromt these tests that the 7950 GX2 in SLI will be able to trump any other solution in its market segment.
Also, the 7950 GX2 doesn't require an SLI board -- which is a great advantage of current multi-GPU solutions. In many cases, putting two other solutions in SLI won't be an option for users who upgrade to a 7950 GX2.
But
Please understand that I certainly appreciate the requests for the inclusion of the 1900xt crossfire and the 7900 gtx crossfire as a reference point to what is currently possible on the highest end of the spectrum. In future articles involving the 7950 GX2 we will address this issue. Thanks very much for your feedback.
poohbear - Thursday, June 8, 2006 - link
50% failure rate? dude, do u know how this percentage thing works?! that would mean 1 in 2 79XX cards fail. please, bs is a great thing and we have plenty of it on the net, but try to atleast make your bs somewhat believable.nullpointerus - Monday, June 5, 2006 - link
No, it isn't. They only wanted to reply to a particular point within his post.
Inkjammer - Monday, June 5, 2006 - link
50% failure rate? Where are you getting those numbers from?z3R0C00L - Monday, June 5, 2006 - link
I got the number from polling various website forums.. including HardOCP.eVGA, XFX and BFG claim low to non-existant issues. My polls show an avg of 48% failure rate. It's on HardOCP... go and check out the forums.