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post #71 of 135
Quote:
Originally Posted by Defoler View Post
More threads? No, it doesn't require more threads.
And its not really pixel processing. Its color.

The simplest AA is pretty much render a picture of 1920X1080 (example) to 4 times its size, as if you are playing at 7680x4320, than it does the required color calculations, and change the color of eachpolygon's edges (or everything, depends on the settings or game wise).

This requires a huge amount more memory than normal.
Without AA most games can be easily run with 1GB, even in surround. But with AA you need twice as much memory because of the colors information stored.

This is the reason why 3GB on the special edition 580s makes a very big difference.
It increases the geometrical workload or IAW more threads.

http://en.wikipedia.org/wiki/Spatial_anti-aliasing

You have blending and blurring, it's not all about colors
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post #72 of 135
Quote:
Originally Posted by runeazn View Post
sorry but i am a nvidia user myself but i smell too much fanboynism
not insulting but you do know 1gb each cards vs 2gb each card?

3x1gb= 3gb for nvidia
2x2= 4 gb for ati?

so why are you guys saying that nvidia wins in VRAM?
it doesnt..

and dude trust me the 6990 are better.

but vram is the same anyway 1gb each gpu..
and thats the real vram your gonna get anyway..
i smell more fanboyism from you than the other guy since you don't even know what you are talking about.

the normal reference GTX 580 has 1.5 GB.
op wants to buy non reference 3 GB cards and put them in 3 way SLI configuration so the effective usable vram is 3 GB.

HD 6990 has 4 GB, but only 2 GB per GPU.
op wants quad crossfire X, which puts 2 HD 6990s together.
effective usable vram is only 2 GB in this set up.
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post #73 of 135
If you want in-game performance, GTX 580's in Tri-SLI would be the better purchase. The extra GB of Vram would help a lot with future games. Also, games with Physx would run much more smoothly. (not that there are many out, but Metro 2033 is a big one)

Quad Crossfire and Quad SLI are still extremely glitchy. Their only true purpose is for folding, editing, and benchmarking.

However, I would vote for Tri-Crossfire between a 6990 and a 6970 2GB since it will save you money and uses less power. (only need 2 blocks, less power intake, similar performance)
    
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post #74 of 135
Quote:
Originally Posted by compudaze View Post
I know this is OT, but I wanted to point out that getting a 2500K vs a 2600K will hurt your 3DMark scores. I know you said gaming is your priority, and the 2500K by far is the best value between the two, but you also said you wanted to bench. 3DMark just loves hyperthreading and what's another $100 considering the amount you will be spending?
i'd also like to point out that the 2600K has 2 MB more L3 cache than the 2500K. plus 2600K usually overclocks higher.

and yea 6990+6970 tri fire is pretty good too. it's a bit unconventional but it works. i'd rather u do that that quad fire. quad fire is too much hassle. so is quad sli really.
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post #75 of 135
For three 1080p screens with GPUs under water, I'd say the best bang for the buck / over clocking potential would be three 6970's. If you want the highest performance possible regardless of cost with a bit of future proofing (1GB extra VRAM), put 3x 3GB 580s under water. That will outperform anything AMD has but at a substantially higher cost.

Remember also that the 580 gets its performance at a lower frequency versus the 6970. I currently run my 3GB 580s @ 1020Mhz core which is comparable ~1150Mhz core performance out of a 6970. Stay far away from 590s.
Edited by CallsignVega - 4/17/11 at 1:10pm
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post #76 of 135
u want less heat in ur loop. two 6990s will be insane.
enjoy and post pics.
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post #77 of 135
Quote:
Originally Posted by runeazn View Post
sorry but i am a nvidia user myself but i smell too much fanboynism
not insulting but you do know 1gb each cards vs 2gb each card?

3x1gb= 3gb for nvidia
2x2= 4 gb for ati?

so why are you guys saying that nvidia wins in VRAM?
it doesnt..

and dude trust me the 6990 are better.

but vram is the same anyway 1gb each gpu..
and thats the real vram your gonna get anyway..
if i were you i would stop posting in this thread
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post #78 of 135
Quote:
Originally Posted by dealio View Post
if i were you i would stop posting in this thread
lol I serious don't think that dude knows the 3GB 580s have 3GB VRAM each card.
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post #79 of 135
Thread Starter 
You guys are hurting me financially

I've decided to go with the 2600k and turn off HT *needz ultimate flame/armor suit* If the games are not using HT the extra mojo in the cache is gonna help right.

Benchmark wise i'll just re-enable HT and find a stable clock with it.

Edit: anyone wanna buy my rig except screens
Edited by Coolio831 - 4/17/11 at 1:30pm
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post #80 of 135
^haha i'll take the 1 GHz 560
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