Brand G.SKILL Series Ripjaws X Series Model F3-10666CL9D-8GBXL Type 240-Pin DDR3 SDRAM Tech Spec Capacity 8GB (2 x 4GB) Speed DDR3 1333 (PC3 10666) Cas Latency 9 Timing 9-9-9-24 Voltage 1.5V ECC No Buffered/Registered Unbuffered Multi-channel Kit Dual Channel Kit Features Designed Specifically for Intel Sandy Bridge CPUs, H67 and P67 Platforms