i have on i7 920 and a evga 260 core 216 so would a ati 5850 do better or 2 5770 in crossfire i never really did ati but nvidia is just to much money i just dont feel like i get anything better with them..thanx
You will benefit from CF in that resolution and as i said 2 HD 5770s perform better but i personally prefer 1 HD 5850 because it require less power and produces less heat and also performs well in 1920x1080
Wait until the end of this month before deciding: Nvidia will (finally) release their new cards TOMORROW! and whatever happens, this will change the GPU landscape.
I would always go for a single, strong card over two weaker ones, one card is easier to manage and more stable and even now not every game performs well with two or more GPUs.
Or you could simply SLI the GTX260;)