Was mulling over the best bang for $300-$400 for bf3 and was leaning towards going with the 6870 in cf but I was reading that two 6870 have much more GPU power than they will effectively be able to use due to a lack of vram. In other terms, the vram/gpu power is a little out of balance for the 6870s. Any knowledge on this and its effect on the game and is there a better option for that price range?