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3 580's 3gb or 2 6990's - Page 12

post #111 of 135
Quote:
Originally Posted by ezveedub View Post
Since I own a 6990 and 6970 in Crossfire with no issues, I can't see how this post is valid.
Of course it is, he has nothing to defend.
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post #112 of 135
6990's for sure.
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post #113 of 135
You can't go wrong with either choice.

Threads like these become laden with personal opinion and crappy x,y,z benchmark charts.

You can be assured that no matter what you pick you'll probably run into issues at some point and no matter what you pick they will be awesome.

Everything after that is personal preference and personal experience, two people could have entirely two different opinions on the same hardware simply because their expectations and experiences are not the same.
    
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post #114 of 135
Quote:
Originally Posted by BallaTheFeared View Post
I don't have 200% scaling with my 470s, but I have 180% or better in everything I've played.

Am I doing it wrong?

Seems I hear a lot about scaling and how much better ATI is, isn't 200% for CF/SLI the theoretical max you can achieve?
Yes it is. If u exclude crappy fps measuring routines and some rare pre-rendering cases.

But Crossfire will always scale better on 3GHz CPU from Anandtech / Hardocp.
post #115 of 135
I have been thinking Fermi demands more from the cpu than AMD cards, but I have nothing to back that up. I haven't seen any scaling issues, but I run a pretty high cpu overclock.

I don't really care for stock review sites with 980x chips at stock, seems to be quite possibly the dumbest way to test.
    
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post #116 of 135
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post #117 of 135
Quote:
Originally Posted by GIPrice View Post
I dunno whats funnier, 3 gpus beating 4, or 3 gpus using more power than 4.

It also seemed as though the 580s handled the high tess areas better than the 6990s which got some frames back on the less dx11 intensive portions of the test (like the lighthouse).
Edited by BallaTheFeared - 4/18/11 at 2:10am
    
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post #118 of 135
Quote:
Originally Posted by BallaTheFeared View Post
I dunno whats funnier, 3 gpus beating 4, or 3 gpus using more power than 4.

It also seemed as though the 580s handled the high tess areas better than the 6990s which got some frames back on the less dx11 intensive portions of the test (like the lighthouse).
Good point. I wonder what will happen with the power consumption when the guy adds the 4th GTX580!




Last weekend I had the opportunity to play Crysis 2 on GTX580 SLI and also on 6990. The AMD solution is a recipe for success if you want Epilepsy!
 
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post #119 of 135
I'd say 3 580's. Down the track when you want to upgrade. Like it'll be 3 years you can sell them for quite a bit
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post #120 of 135
Thread Starter 
I already settled on a cpu/gpus/mobo. It looks like i'll have to use the 800D since it has alot more room for the 3 cards. During those videos of 3way sli, i saw the wattage jump past over 950. Would it be wise to get a psu somewhere in the 1500 watt range or is 1200 enough. for heavily oc 580's plus 2600k.
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