From Ask Joystiq:

We start with the one we hear the most. This one comes from
bernesto: “What’s the best tool to optimize my PC for gaming?”

This is an easy one. Every game depends on your videocard to pump out the graphics. So, if you want to get the most
out of your game, you have to tackle the GPU. We have one word for you — Powerstrip.

…excerpt from: Joystiq … Foton’s tip that will save you hours of time: just buy a new video card. Problem solved.