Whether I'm building a new system, or replacing the card in an old one, what are some the things I should be looking for when buying a new videocard? I want to make sure I select the proper card my system can handle.
Any and all help would be greatly appreciated
As others have noted, CPU/motherboard/psu are necessary information to make this decision.
Perhaps more important, your display's resolution and what you plan to do with the card is key info. (e.g. play WOW? play Metro2033? do CAD work?)
Last, what you plan to spend is needed.