G.Skill F3-12800CL8D-4GBTD Trident DDR3 RAM 4GB (2x2GB) Dual 1600Mhz CL8

Size - 4GB (2x2GB), Channel - Dual, Speed - 1600Mhz, Latency - CL8, Timing - 8-8-8-21, Voltage - 1.6V