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Compatible CPUs and Motherboards

Socket CPU Silent Mode (1,000~1,400rpm) Low-noise Mode (1,400~2,000rpm) Compatible Motherboard Intel 775 Pentium 4 Prescott Up to 540&650 Supports all speeds Celeron D Supports all speeds Supports all speeds 478 Celeron D Supports all speeds Supports all speeds Pentium 4 Willamette Northwood Prescott Celeron AMD 754 Sempron Supports all speeds Supports all speeds Athlon 64 939 Athlon 64 Athlon 64 FX 940 Athlon 64 FX Opteron

1) Intel Pentium4 Socket 775/478 2) AMD Sempron/AMD64 Socket 754/939/940 * Note : No motherboard components with a height greater than 39mm (1.53inch), as well as the PSU, disk drives, VGA card, and RAM should be present within a 68mm (2.68 inch) radius from the center of the CPU.