bryanW1995
Lifer
- May 22, 2007
- 11,144
- 32
- 91
Oh, so you haven't bought yet? Good thing. Unfortunately, none of the ones under $100 can handle two Radeon HD 6870s. Out of that list, the Corsair TX650 V2 is the best. It's based on a better design than the GS700, has more efficiency, lower ripple, and lower voltage fluctuation. If you can pay a bit more for the possibility of a Radeon HD 6870 CF in the future, though, I highly suggest you get the Corsair TX750 V2. It has more power connectors including 4x PCIe and can handle a significant amount more power, for only $11 more than the Corsair GS700 you were eying.
That said, a Radeon HD 6870 is only around 8-10% faster at the same clock speed as a 6850, and the 6850 OCs a tiny bit more on average. Something to keep in mind if you're gonna OC. I'd be surprised if a 6850 couldn't handle BF3 at high settings with 2xAA at 1920x1080.
A 56a 80+ certified corsair psu could VERY easily handle 2 x 6870. You probably only need 35, maybe 40a on a high quality psu like corsair.