Crucial 8gb kit 2x4gb ddr3 1600 mhz dimm desktop memory product specifications product description crucial ddr3 8 gb2 x 4 gb dimm 240 pin product type ram memory capacity 8 gb2 x 4 gb memory type ddr3 sdram dimm 240 pin upgrade type generic data integrity check non ecc speed 1600 mhz pc3 12800 latency timings c l 1 1 features low voltage unbuffered voltage 135 v manufacturer warranty limited lifetime warranty