Socket type: 754, 939, 940, AM2, F AMD CPU clock speed (maximum): Sempron (up to 89W) Socket 754 (3400+, 2.0GHz) Socket AM2 (3800+, 2.2GHz) Athlon 64 (up to 89W): Socket 754 (3700+, 2.4GHz) Socket 939 (4000+, 2.4GHz) Socket AM2 (4000+, 2.6GHz) Athlon 64 FX (up to 104W): Socket 939 (FX-57, 2.8GHz) Socket 940 (FX-53, 2.4GHz) Athlon 64 X2 dual-core (up to 89W): Socket 939 (4400+, 2.2GHz) Socket AM2 (5600+, 2.8GHz) Phenom X2 triple-core (up to 95W): Socket AM2 (8600, 2.3GHz) Phenom X2 quad-core (up to 95W): Socket AM2 (9650, 2.3GHz, 9100e,3.2GHz) Opteron: Socket 939 (150, 2.4GHz) Socket 940 (150, 2.4GHz; 250, 2.4GHz; 850, 2.4 GHz) Dual-core Opteron: Socket 940 (275HE, 2.2GHz; 875HE, 2.2GHz) Second-Generation Opteron? Socket AM2 (1218HE, 2.6GHz) Socket F (8218HE, 2.6GHz; 2218HE, 2.6GHz) Third-generation Opteron (up to 75W): Socket F (8356, 2.3GHz; 2356, 2.3GHz) Cooler dimensions: 85 x 83.5 x 71mm Cooler weight: 384g Fan: Bearing type: 1B1S/entering bearing Rated voltage: DC 12V Dimensions: 80 x 80 x 25mm Speed: 1,800 to 3,000rpm (±10%) Airflow: 21.4 to 41.3cfm (±10%) Noise: 19 to 31dBA Interface material: high efficiency thermal compound Fan approved by CE, TUV, and UL