Arctic Cooling has just announced a low-profile version of their Freezer 7 CPU cooler for the Intel platform; this designed primarily to suit slim cases, HTPCs etc.
The cooler is just 53mm high (with fan holder) and uses an 80mm PWM controlled fan with a speed range of 600 to 2000RPM. The heatsink itself makes use of dual heatpipes and a patented fan holder that is designed to help eliminate the humming noise.
Apart from its lightweight and low profile design, the Freezer 7 LP also performs excellent cooling execution. Two heatpipes, 40 fins and an 80mm PWM fan dissipate heat from the CPU core efficiently and rapidly. Together with the highly thermal conductive pre-applied MX-2 thermal paste and voltage regulator cooling, the Freezer 7 LP is 20% cooler (thermal resistance) than the generic E8500 low profile cooler, giving media centre users an unexpected cooling experience.