Corsair XMS2 2GB (2x1GB) DDR2 800 MHz (PC2 6400) Desktop Memory Corsair Dual Channel 2048MB PC6400 DDR2. Item voltage is 1.9V Contains 2x1024MB Memory CAS Latency 5-5-5-18-T1, 1.9V Dual Channel DDR2 Contains 240 Pins