G.SKILL Ripjaws Z Series 32GB (4 x 8GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) Desktop Memory Model F3-2133C10Q-32GZM Cas Latency: 10 Voltage: 1.6V Multi-channel Kit: Quad Channel Kit Timing: 10-12-12-31 Buffered/Registered: Unbuffered Features: Quad channel memory optimized for Intel Core i7 processor family for Socket LGA-2011 and X79 platform Compatible with Intel dual channel systems Intel XMP support for 2nd,3rd and 4th Generation Intel Core Processors