I want to upgrade my graphics card, so I was just curious if there was a way to tell which video cards at the store can fit into my computer by looking at the motherboard or anywhere else on the computer?
Find the dimension of your pc case, take a look inside too.. go check what power supply you have... i would get a good quality power supply from Seasonic, antec, and corsair. 400W should run you 6770,gtx 460,6850, and 6870 just fine.