Thermalright Ultra 90 CPU Cooler
 

The Thermalright Ultra 90 is a solid performing air cooler with six heatpipes to keep your CPU temperature down. Its unique design allows you to use your own 92mm fan for fine tuning of heat vs. fan noise. A competitive price of 25 USD makes this cooler even more attractive, and if you need more cooling power you can just get the 120mm Ultra 120.