Corsair TWIN2X4096-8500C5DF Dominator 4GB 2 X 2GB PC2-8500 1066MHz 240-Pin DDR2 CL5 Dual Channel Desktop Memory - Fan Included Memory Size: 2 x 4096MB Memory Speed: 1066MHz PC8500 Memory Type: Dual Channel DDR2 Memory CAS Latency: 5-5-5-15 Pins: 240