The only differences between them will be VERY minor, but i would personally go for twin frozr, because that'll cool better. However, EVGA is known for legendary customer support. Either way, its a difference of a amaximum of 3-4FPS, i doubt even that much. You wont feel it, trust me. Personally, id go for twin frozr, cause you know, better cooling. That being said, the twin frozr is sometimes known to be a little noisy.