I am looking at which 2 cards to run in SLI. I was going to buy a GTX 580, but decided i would easily get more bang for my buck with SLI. I am wondering which 2 higher end/ newer cards (400 series or higher) would be the best for about the same price as the 580. The 580 is around $500 but i can go up to around $600 for the right set up.
personally I'd say dual Asus DCU2 or MSI TF2 gtx 560ti, they will fly in sli, not to mention as a single card! Great bang for your buck, my experiences with crossfire have all been negative (ever present micro stutter and flickering) but from what Ive hear Nvidia more or less delivers what they advertise with sli and deliver the drivers to properly run it. Otherwise id say got for dual 6950s but with that in mind id stick with gtx 560tisli especially with the brands I listed above.
Would the 570 SLI setup out perform a 480 SLI setup? They are both similar in price from what i can see.
You definitely would want to stick with the 570's over the 480's, there is no question about that. The heat and noise of GTX 480's in SLI would be a big drawback. The 570's, on the other hand, have excellent cooling. I would even consider reference models for SLI due to their shroud design which allows better airflow when two cards are closely spaced together. Reference models also vent all heat outside the case, as opposed to the custom cooled models which vent heat back inside the case.
Read the official tomshardware charts in the earlier post 570sli > 6950. The next step up in ATI is 6970cfx which is same price point as the 570sli and as you can see the performance is better with the 6970s. The only thing is with AMD video cards there is less driver support. No physicX. And when in crossfire the drivers don't support 3d gaming, the sli does.
I actually purchased the 6970 CF and they were awesome in raw power but when it came to driver support they suffered, had to exchange them.
If you put the money down for the 570 SLI along with a good quad core CPU you system will be one of the most powerful available and be able to run anything you want at max setting with high, smooth as butter framerate, even with 3d or multi-monitor setups.