QUOTE(Genocide Junkie @ 02/14/07 8:25am)

If you have an PCI-E slot that is a great choice. There are several models of that card and Newegg is a good place to find them. I bought the 7950 GT KO from there and am well pleased. Make sure you have a strong enough power supply to power whatever card you buy.
Junkie
Good Point!! This is a part of the PC that is overlooked every time people upgrade components. I believe the manufacturers for this particular card recommend, at the very minimum, a 300watt power supply. After you factor in all the PC's Peripherals, you should probably be running a power supply rated at around 500 watt minimum. Your particular needs will vary, but I would say that most folks would be safe with a power supply rated at around 700 watts and up.
Power supply selection is definitely another science all to itself. There are "cheapies" out there that say they are rated for higher power requirements, but they are short lived and just problems waiting to happen. Rule of thumb here, for the novice shopper, the heavier the power supply (actual weight) is a very good indicator of quality as the more it weighs the better quality parts are used in the construction.
Try it sometime, go to Bestbuy (or your favorite computer supply store) and physically handle the selection of similarly rated power supplys and feel the difference, then look at the price tags. The heavier the product, the higher the price, the better the quality. No joke!
Good tip, Junkie! You probably headed off the next problem that was waiting to rear its ugly head!