Yes, and you can do it right from the Nvidia control panel after downloading and installing Nvidia System Tools.
However, it won't really boost performance much, as the 9500GT just doesn't have the shaders to do anything intensive, like gaming. They make great add-on cards for running PhysX on, and for decoding HD videos like in an HTPC and such, though.
------------------------------xbonez: yeah, but what if that had got me fired? mousemonkey: I know of a couple of busy street corners, the oldest profession in the world is always recruiting. Ten dollar you love me long time?
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