Product Detail 1. Compatible with Intel s Dual Core Pentium, Pentium4, and Celeron D for Sock 775 2. Low-noise 92mm PWM Control fan for automatic control of the fan s RPM according to CPU temperature. 3. Optimized heatsink layout composed of pure copper for maximum heatsink efficiency 4. Innovative, patented, and curved heatpipe design for a heat transfer capaci of up to six heatpipes with just three. 5. Maintains minimum RPM even when Duty signal supplied by M/B is below 30%. . The "Zalman CPU Fan With 70mm Fan LED CNPS9500 LED-CU" is best product for you. We recommended Zalman CPU Fan With 70mm Fan LED CNPS9500 LED-CU