8GB 2 X 4GB DDR2 PC2-6400 800MHZ 240Pin AMD DIMM Hgih Density Desktop Memory AMD ONLY and Window 7 only !!! NOT SUPPORT Compaq,HP,Dell,Apple Computer.!! All the Intel CPU,Intel chipset,Intel mainboard. NOT SUPPORT Compaq,HP,Dell,Apple Computer.!! All the Intel CPU,Intel chipset,Intel mainboard. Capacity: 4GB Type: 240-Pin DDR2 Dimm Speed: Max speed PC2-6400 800 MHz (chip DDR2-667) It can not fit for any intel cpu motherboard, only fit for AMD CPU Motherboard