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Quad-SLI GTX 580 vs QuadFire 6990 ?

post #1 of 14
Thread Starter 
Anyone have any benchmarks directly comparing 4 x GTX 580 against 2 x HD6990 ?

I cant find a single test hat actually pits that combo against each other and all the ones I find have different resolutions and options on one card against different settings on another.

Just curious how 4 GTX 580's @ 900Mhz+ compare at hi res (triple screen 5760x1200 or 5760 x 1050) with 6970's or 6990 at similar clocks.
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post #2 of 14
580's would work better, 2 580's beat out a 6990, so 4x580's would easily beat out 2 6990's, especially because of nvidias great sli scaling as compared to ati. Also, on my other computer, my 3 6970's scale horrible, they are just marginally better than my 2 570's. The thing is, for 580's you will NEED waterblocks to achieve 900 mhz, the top 3 cards wil be way too hot.
post #3 of 14
OK well,

http://www.anandtech.com/bench/Product/298?vs=308

This is for SLi 580's vs 6970's, Now considering that scaling is so much better now using these figures and just doubling them should be pretty accurate accurate.

But in all honesty, ATI have always performed better with a 3 screen setup. There are a few issues with SLi and Nview if I remember rightly.
post #4 of 14
Thread Starter 
Quote:
Originally Posted by noak;13360024 
580's would work better, 2 580's beat out a 6990, so 4x580's would easily beat out 2 6990's, especially because of nvidias great sli scaling as compared to ati. Also, on my other computer, my 3 6970's scale horrible, they are just marginally better than my 2 570's. The thing is, for 580's you will NEED waterblocks to achieve 900 mhz, the top 3 cards wil be way too hot.

Well my 3 are already under water wink.gif I'm itching to pull the trigger again and call it a fully populated system.

Only issue is that since I also have Raid cards it will force them into 8x mode frown.gif So pondering 2 x 6990 w/water blocks might be another route.
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post #5 of 14
Quote:
Originally Posted by noak;13360024 
580's would work better, 2 580's beat out a 6990, so 4x580's would easily beat out 2 6990's, especially because of nvidias great sli scaling as compared to ati. Also, on my other computer, my 3 6970's scale horrible, they are just marginally better than my 2 570's. The thing is, for 580's you will NEED waterblocks to achieve 900 mhz, the top 3 cards wil be way too hot.

AMD actually has slightly better multi gpu set ups right now.(xfire vs SLI scaling)
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post #6 of 14
Wait up,

If you already have 3 580's then just stick with that.

Comps
post #7 of 14
I'm not sure about Quad cards, but according to HardOCP, Tri-Fire 6970+6990 matches and even beats 3-way SLI GTX580.

http://www.hardocp.com/article/2011/04/28/nvidia_geforce_3way_sli_radeon_trifire_review
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post #8 of 14
Thread Starter 
Quote:
Originally Posted by compuman145;13360046 
OK well,

http://www.anandtech.com/bench/Product/298?vs=308

This is for SLi 580's vs 6970's, Now considering that scaling is so much better now using these figures and just doubling them should be pretty accurate accurate.

But in all honesty, ATI have always performed better with a 3 screen setup. There are a few issues with SLi and Nview if I remember rightly.

Great Link hadnt seen that one yet , thank you! + Rep. I had 2 x 5970's under water and the drivers made me want to harm puppies and kittens in Eyefinity mode.......... LOL But I was pondering if they got the drivers straightened out yet LOL
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post #9 of 14
I love that site, they do benches for loads of different hardware and you can do your own Vs setups biggrin.gif
post #10 of 14
Thread Starter 
Quote:
Originally Posted by FallenFaux;13360099 
I'm not sure about Quad cards, but according to HardOCP, Tri-Fire 6970+6990 matches and even beats 3-way SLI GTX580.

http://www.hardocp.com/article/2011/04/28/nvidia_geforce_3way_sli_radeon_trifire_review

I read that a few days ago. Was considering it , but when I already have 3 Hydro Copper 580's the difference would have to be spectacular.

And mine are running at 1GHz so its tough to find a good comparison. Even if I add a 4th 580 and have to run them at say 975Mhz each in SLI the performance should be better at max AA/AF then 69xx I imagine. BTW: I am gaming at 5870x1200 and vram doesnt seem to be a problem at that res.

All things considered since swapping the current 580's in favor of 69xx cards would be of little benefit in performance or finance LOL .........
Edited by ShtSh00ttr - 5/2/11 at 7:42pm
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