Gateway 24-20475D00AB Socket 775 Aluminum BTX Heat Sink up to Core 2 Duo 2.66GHz Gateway 24-20475D00AB Socket 775 Aluminum BTX Heat Sink up to Core 2 Duo 2.66 GHz General Features: Aluminum heat sink BTX (Balanced Technology Extended) Supports Intel Core 2 Duo, Pentium D, Pentium 4, Celeron D Socket 775 processors up to 2.66 GHz Unit Dimensions: 2.5 x 3.5 x 4.75-inches (H x W x D, approximate)