Single asus gtx570 or sli asus gtx570?

Im thinking of buying asus gtx570 ucII, however, im confuse whether to make it single or sli both the same card..is it worth if i spend money to buy 2 asus gtx570 and sli?can someone tell how is it different?


Mobo- evga x58ftw
Processor- intel i7 930
Memory- 6gb ram
Psu- 850watt

Thanks in advance!
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More about single asus gtx570 asus gtx570
  1. The top green bars in this chart show the performance increase in terms of percentage versus a single GTX 570. It varies depending on the game, but you get the idea that for most games the increase for SLI will generally be somewhere in the 50%-100% range. What that means for gameplay is a smoother feel to the controls and the ability to enable more graphical settings.


    http://www.xbitlabs.com/articles/graphics/display/geforce-gtx-570-sli_10.html#sect0
  2. I assume we are talking factory overclocked Asus 570 Cu II not the reference model ? Here's a comparison w/ the reference model

    Guru3D uses the following games in their test suite, COD-MW, Bad Company 2, Dirt 2, Far Cry 2, Metro 2033, Dawn of Discovery, Crysis Warhead. Total fps (summing fps in each game @ 1920 x 1200) for the various options in parenthesis (single card / SL or CF) are tabulated below along with their cost in dollars per frame single card - CF or SLI:

    $ 215.00 560 Ti - 900 Mhz (495/862) $ 0.43 - $ 0.50
    $ 340.00 570 (524/873) $ 0.65 - $ 0.78
    $ 500.00 580 (616/953) $ 0.81 - $ 1.05

    On average, in the games listed, the 2nd GTX 570 gets ya 67% more fps for about 78 cents per frame. Guru3D didn't test the Asus Factory OC'd 570 model but looking at other sites, it averaged 13.0 % faster than the factory overclocked 560 Ti's in a single card configuration. However the 560's scales better in SLI (74% higher), so two factory overclocked Asus 570 CU II's are about 8.9% faster than two factory overclocked Asus 560 CU II TOP's. That 8.9% comes at a price increase of 48% tho.
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