I understand that I will almost definitely have to upgrade the PSU, which is no problem. But I cannot for the life of me find a definitive card that will fit my computer exactly. I don't want to buy a PSU and GPU then find out there is some small detail I have overlooked, and then I have wasted money on both parts. I am fully capable of installing both pieces, but I am clueless when it comes to the technical details of graphics cards. Any help would be appreciated.
I have been looking on the site, game-debate.com. One of the cards they mention is a GeForce GTX 465, or even the GeForce GTX 460. If I were to upgrade my PSU to 600W-700W would these cards be viable options?