G.SKILL Ripjaws Z Series 32GB (4 x 8GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-1866C10Q-32GZM Cas Latency: 10 Voltage: 1.5V Multi-channel Kit: Quad Channel Kit Timing: 10-11-10-30 Buffered/Registered: Unbuffered Features: Quad channel memory optimized for Intel Core i7 processor family for Socket LGA-2011 and X79 platform Compatible with Intel & AMD dual channel systems Intel XMP 1.3 support for 2nd,3rd and 4th Generation Intel Core Processors