CNPS9500 LED  Silent blue LED CPU cooler equipped with 3 heat pipes that perform as 6 heat pipes. :: Compatible CPUs and Motherboards Intel 478 Celeron Supports all speeds Supports all speeds Celeron D Pentium 4 775 Celeron D Supports all speeds Supports all speeds Pentium 4 Pentium D Core 2 Duo Core 2 Quad Core 2 Extreme AMD 754 Sempron Supports all speeds Supports all speeds Athlon 64 939 Athlon 64 Supports all speeds Supports all speeds Athlon 64 X2 Athlon 64 FX Opteron Dual-Core Opteron 940 Athlon 64 FX Supports all speeds Supports all speeds Opteron Dual-Core Opteron :: Specifications - FHS Dimensions: 85(L) x 112(W) x 125(H) mm Weight: 530g Base Material: Pure Copper Dissipation Area: 3,698㎠ Thermal Resistance  Silent Mode  0.16°C/W  Low-noise Mode  0.12°C/W - FAN Bearing Type: 2 Ball-Bearing Speed  Silent Mode: 1,350rpm ± 10 %  Low-noise Mode: 2,600rpm ± 10 % Noise Level  Silent Mode: 18.0dBA ± 10%  Low-noise Mode: 27.5dBA ± 10%