The most important thing to do do before actually going out and buying a new graphics card is to determine what (if anything) is supported by the motherboard.
You need to refer to the mobo manual if you have one.
Failing that, google and get everest home and see what that says about what your mobo supports. Everest doesn't support some of the latest mobo's so if it gives you no useful information then look your mobo up on
www.crucial.com. I know they are a ram supplier but their database has lots and lots of useful information which includes graphics card clot amongst other things.
Last but not least, have a look inside your pc. Some cheapo mobo's are not supplied with an expansion slot for graphics. You will usually see a whole load of solder points with nothing attached to them. If you see that, then a new mobo is the only way forward.
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