hey all!! need help in finding a new graphics card for my Dell 720. Yeah, i know im limited because of the dell motherboard and upgrading to a new processor. I want to find the best and second best choice of maximum card without bottlenecking the processor as i dont want to waste money on a gpu that wont utilize my cpu. The mobo is capable of sli but id rather go the powerful single card route. Intel q6600, 3 gigs of ram, and 750 psu. any help would be great....i was looking at a 275 or oc 285 but just dont know...i want to maximize my cpu with the most powerful video card as my next powerful graphics card will roll with a new pc....thx for your help!!