OCZ DDR3 PC3-15000 Gold Low Voltage Dual Channel OCZ3G1866LV4GK 1866 MHz DDR3 / CL 10-10-10-27 (CAS-TRCD-TRP-TRAS) Available in 4 GB optimized kits Unbuffered / Gold Layered Z3 XTC Heatspreader Lifetime Warranty 1.65 Volts / 240 Pin DIMM