OCZ DDR3 PC3-12800 Gold Low Voltage Dual Channel OCZ3G1600LV4GK 1333 MHz DDR3 / CL 8-8-8-24 (CAS-TRCD-TRP-TRAS) Available in 4 GB optimized kits Unbuffered / Gold Layered Z3 XTC Heatspreader Lifetime Warranty 1.65 Volts / 240 Pin DIMM