Antec VCool Expansion Slot VGA Cooler
 

Faster processor + faster memory + faster video card = more heat inside your computer case. You can change the heatsink on your processor to help cool things down, and you can add a fan near you memory to cool it down a bit. When it comes to video cards you have a couple of options - add a loud fan and mount it above your video card and have little effect, go the water cooling route and spend money or try the Antec VCool Expansion Slot VGA Cooler and be surprised at how well it works.