So upon the release of Skyrim and a series of other new games i've found out that my computer can't seem to cut it anymore, the card seems to overheat after 20 minutes and the computer goes into power saver mode. So i've decided to go get a new card, the Steam support recommends a "Nvidia GeForce GTX 260" but is there anything else more suitable to play this game and other future releases?. Any advice and points in the right direction are appreciated.