KWSN Hardware heeft een artikel geschreven over de verschillende methodes om je videokaart te coolen. Best wel nuttige info, hier heb je wat info over de heatsink:
The most common type of video card cooling is the heatsink. They are usually made of aluminum which dissipates heat quickly. The heatsink takes heat off the processor and puts it into the air. A processor on its own has a surface area as large as its plastic slug (cover). A heatsink uses fins or pins to make the surface area larger, so it makes more contact with the air. The nicest heatsink on a video card that I've seen has got to be 3dfx's Voodoo3 3000.