The Arctic Cooling Freezer 7 LP is a lightweight Intel socket 775 heatsink made specifically for slim-line and book-sized PC cases. It stands less than 50mm high, weighs just 260 grams and operates very quietly. Although it's 80mm 600-2000RPM PWM fan is underpowered for high temperature Intel processors, for the newer generation of sub-85W CPUs, the Freezer 7 LP is more than satisfactory. The heatsink is officially rated for heat loads up to a maximum 95W.... we'll still throw 150W at it for fun!