32GB DDR3 G.Skill RipjawsZ Series Quad channel memory kit, comprising 4x8GB modules. PC3-12800 memory, 1600MHz with timings of CL10 (10-10-10-30). Engineered for Intel X79 platform and equipped with new style red heatsinks. Intel XMP Ready memory kit. This memory kit consists of four individually tested 8GB DDR3 1600MHz memory modules. Pretested in the following motherboards, but may also be suitable for other motherboards. Please refer to the G.Skill website for updated compatibility listings. ASUS Rampage IV Extreme ASUS P9X79 DELUXE MSI X79A-GD65 MSI X79A-GD45 Gigabyte GA-X79A-UD5 ASRock X79 Extreme 9 ASRock X79 Extreme 4 ECS X79R-AX Intel DX79SI