G.Skill 32GB DDR3 PC3-17000 2133MHz Sniper Series (10-12-12-31) Quad Channel kit (4x8GB) 32GB DDR3 2133MHz Quad Channel kit - 4x 8GB DDR3 modules PC3-17000 with memory timings of 10-12-12-31, CL10 Designed especially for Intel Z77, Z75, Z68, P67 based motherboards G.Skill Sniper DDR3 Series With unique gun design heatsinks