2 in quadfire http://www.techpowerup.com/reviews/ASUS/ARES_CrossFire/
single card http://www.techpowerup.com/reviews/ASUS/ARES/
single card http://www.techpowerup.com/reviews/ASUS/ARES/
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...As a user who runs 2 x Sapphire 5970 4gig cards clocked at 1000mhz each in quadfire...
Quoted from the site maybe you should read everything before posting such rubbish
ARES + HD 5870: This setup works considerably better. Both cards are clocked at the same frequencies of 850 / 1200 which wastes no clock cycles. There is still the difference in memory size (HD 5870 has only 1 GB), but with only a few benchmarks out there that profit from the extra memory, the losses are rather small. As result the 3-GPU combination of ARES + HD 5870 is actually faster on average than the 4-GPUs of ARES + HD 5970. If you really want to run ARES in a CrossFire setup but can't afford two ARES cards this is the sweet spot to go for.
My 2 pence for these cards to even be considered your either very nutz or running massive eyefinity resolutions
You do get excited don’t you? I honestly picked those two benchmarks at as they were two most demanding games on list of games they tested and yes I did go back and looked through all the other benchmarks including Quake and Far Cry. I was just impressed that they got some decent scaling over 4 GPU cores, I just wonder how much of the unused power is down to CPU bottleneck and drivers.
I would imagine the scaling gets worse as cards are added due to bottlenecks. I wouldn't be surprised it the scaling is better with say 4x5750s or something like that.
As a user who runs 2 x Sapphire 5970 4gig cards clocked at 1000mhz each in quadfire, I can honestly say in modern games going from 2 gpu's to 3 gpu's the scaling varies between around 60% and 85%. At least in the games I tested at the time. Going from the 3rd to 4th gpu, as expected it's less, about a 30%-35% increase but still a far cry from the terrible scores quadfire originally had about a year ago. Overall it's faster then Trifire too as I tested a 5970 4gig and 5870 2gig in trifire also. Whether it's worth the money depends on the individual. I have to say the Sapphires are loud, at 100% the same as a reference 5970 at around 45%. With earphones its ok. THe problem is the fans run at 100% once the gpu's get to around 55 degrees, which is why the temps have never gone over 66%. Afterburner sems fidly with it too.
I know its not the point of the tests but a 4870x2 is better than a GTX480 in almost everything?![]()