Ok, so let's get the bad out of the way: I own an HP Pavillion Elite e9150t. Yes, I know I should have custom built a computer that had such high specs but I got a good deal on this and was lazy. Specs are: i7 920, 8gb ram, 1tb hdd, geforce gts250, and a wimpy 460w PSU my question is: are there any decent dx11 graphics cards that I can run with my lame psu in my system, and if so...what would be the best choice? I'd want the best bang for my buck and prefer to spend under $250 but definitely under $300... anything? or am i screwed?