G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) Desktop Memory Model F3-2133C10D-8GXM DDR3 2133(PC3 17000) Timing 10-12-12-31 Cas Latency 10, Voltage 1.6V Compatible with Intel LGA1155 platformsIntel XMP support for 2nd and 3rd Generation Intel Core Processors 240-Pin DDR3 SDRAM