a single 4870x2 will have trouble at that res and full AA in some games. alot of others it will run full settings fine. BC2 is the new crisys in my book. with 2 of em in CFX and full AA, i get maybe 15-20 fps. not playable
With 2 4870x2's you only get 20 fps in BC2? Wow, I thought that 2 of those cards would do much better than that!
if youre worried about money, im telling you now that 4870x2 is the best choice. it is the cheapest single card that will run 25x16 ok by over $100. as long as you dont need eyefinity or dx11, and your psu is over 500W, you should be fine. you can get one used for under $200. if you do get one though, you need to replace the tim and thermal pads as it will decrease the noise by well over half, and in batman AA it also reduced my gpu temp from 99C max to about 75C max. ill try to get you some framerate results from mine if you want. what do you prefer, as the only way i have right now is tf2 where i have the real-time fps displayed in the corner.
Ekuest, if you could somehow get BC2 fps data that would be much appreciated. The above quote is troubling for your 4870x2 case