ATI MultiGPU Done Right: The Radeon X1800 CrossFire Edition
by Derek Wilson on December 20, 2005 9:00 AM EST- Posted in
- GPUs
Day of Defeat Performance
Day of Defeat: Source seems to be hugely CPU limited with this kind of GPU power pumping through the game. This is especially true when running without antialiasing. Both of our tests have 8x anisotropic filtering enabled, but that doesn't seem to make a dent in any of our multiGPU configurations. We can see that CPU limited cases, SLI seems to incurr a little more CPU overhead. Thus the single card 7800 GTX 512 score is better than it's SLI performance.
Under the antialiasing tests, there is a much more severe drop in performance after 1600x1200. All but the dual 512MB part configurations fell to under 50 FPS at 1920x1440. Under the highest stress conditions, the 7800 GTX 512 SLI manages to barely outperform the X1800 XT CrossFire, but the rest of data points to what we've seen many times before: ATI hardware performs very well under Valve's Source engine.
Day of Defeat: Source seems to be hugely CPU limited with this kind of GPU power pumping through the game. This is especially true when running without antialiasing. Both of our tests have 8x anisotropic filtering enabled, but that doesn't seem to make a dent in any of our multiGPU configurations. We can see that CPU limited cases, SLI seems to incurr a little more CPU overhead. Thus the single card 7800 GTX 512 score is better than it's SLI performance.
Under the antialiasing tests, there is a much more severe drop in performance after 1600x1200. All but the dual 512MB part configurations fell to under 50 FPS at 1920x1440. Under the highest stress conditions, the 7800 GTX 512 SLI manages to barely outperform the X1800 XT CrossFire, but the rest of data points to what we've seen many times before: ATI hardware performs very well under Valve's Source engine.
Facebook
Twitter
RSS
40 Comments
View All Comments
Vol2005 - Tuesday, December 20, 2005 - link
Dunno what about 512gtx-Sli, but single one is http://www.pcpop.com/doc/0/121/121711_5.shtml">no more "the best of the best" since "eax 1800xt top" beat it in most d3d benchies. ( not to mention it's price some $20-50 more than standard xt)Fenixgoon - Tuesday, December 20, 2005 - link
D3D benches are different than real world performance - and for just about everything (if not everything, correct me if i'm wrong), the GTX 512 blows away the GTX 256 and x1800XT. The x1800 XTPE, or whatever's next in line, is *supposed* to compete with the GTX512. Almost seems like nvidia caught ati flat footed on this one.Vol2005 - Wednesday, December 21, 2005 - link
sorry, maybe i was a bit unclearbut the thing is that asus x1800xt-top IS x1800xtpe, indeed. And as you've just said the real competitor to gtx512 according to article that i refered.
As to real world perfomance, it's still uclear to me what do you mean.
Maybe i'm wrong, but aren't the majority of the modern games using d3d? Even if not so, i think these results are fairly enough prove that the gtx is no longer the fastest.
Of course, this has to be proven further by other reviewers
bob661 - Tuesday, December 20, 2005 - link
You should've bought it when it was released. It was available then. Nothing mystical here.Leper Messiah - Tuesday, December 20, 2005 - link
6 frame per second increase in 1920x1440? eh?Tanclearas - Tuesday, December 20, 2005 - link
Come on! There are over 100 people in EVGA's step-up queue waiting for the 7800GTX 512MB, but you have a problem with ATI's availability?!Nvidia got LUCKY with the 256MB 7800GTX that it was ready to launch with no real competition. Nvidia was able to sit on it until sufficient quantity were ready. ATI (sort of) launches the X1800XT and Nvidia falls back to the same old launch tricks. If you're going to hold one company accountable, you have to hold them all accountable!
bob661 - Tuesday, December 20, 2005 - link
LOL! That's some retarded logic you got there pal.Tanclearas - Tuesday, December 20, 2005 - link
So you're saying Nvidia's should not be held accountable for supply issues, but ATI should be held accountable? Please tell me you were being sarcastic.bob661 - Tuesday, December 20, 2005 - link
I'm saying it's retarded because when Nvidia released their cards, you could buy them that day. Unlike ATI that even SAYS it will be different this time around and STILL fails to deliver. If neither companies produce enough to meet demand then they underestimated demand and that's something different entirely.Tanclearas - Tuesday, December 20, 2005 - link
So ATI could have shipped about five cards to the top 10 retailers, and ATI would have completely fulfilled your expectations. They just would have "underestimated demand".That's a huge load of crap you're shovelling there. Both companies are still more interested in appearing to be in a leadership position than they are actually ensuring they are making deliverable products. I just can't understand why so many "journalists" have their heads shoved so far up Nvidia's ass they can count their fillings.