OCZ DDR3 PC3-10666 Platinum Low Voltage Dual Channel OCZ3P1333LV4GK 1333 MHz DDR3 / CL 7-7-7-20 (CAS-TRCD-TRP-TRAS) Available in 4 GB optimized kits Unbuffured / Platinum Layered Z3 XTC Heatspreader Lifetime Warranty 1.65 Volts / 240 Pin DIMM