Make applications run more smoothly with this corsair vengeance red memory expansion kitthis kit contains two 4 gb ddr3 ram memory modules clocked at 2133 mhz allowing you to get boosted performances for your multimedia programs and video games size 8gb 2x 4gb speed 2133mhz voltage 15v tested latency 11 11 11 27 buffered unbuffered fan included no pin 240