So many stock coolers are coming with heatpipes these days. What's the heatpipe thing all about anyway? OCModShop is here to answer your pipe questions.

"Heat pipes are typically used to move heat away from components such as CPUs and GPUs to heat sinks where thermal energy may be dissipated into the environment."

Hrmmm.... Well, that about sums it up. The article does go into a bit more detail, though. Check it out ;)