Dutch cooling firm Nexus unveiled a low-profile processor cooler for HTPCs. Here's a look at the specifications of the Nexus LOW-7000:
Cooler ready for LGA775/LGA1366
120mm PWM fan - 500~2000RPM ( when the case fan is running at 500RPM it is inaudible. When our engineers tested the fan in an ISO certified Anechoic Chamber with 15dB(A) background noise, they were unable to measure the fan).
4x 6mm heat pipes
Only 7cm(2.77in.) high, perfect solution for HTPC's
Because there is a 120mm fan on this cooler, you can have the fan running at lower speeds with still enough airflow to cool the processor.