is this safe? ( link)

[wired14]

http://www.casecooler.com/suovairdu.html


so you just connect one end of the tube to a fan and the other tube on the cpu's fan?

[L337 M33P]

Yep - it's generally termed a duct, people most often make them themselves, but you can buy them. They basically help cool the CPU by directing cold air in from the outside instead of from inside the hot case. They also prevent recycling of hot air around the heatsink.