Valueram39s kvr21e15s84 is a 512m x 72 bit 4gb ddr4 2133 cl15 sdram synchronous dram 1rx8 ecc memory module based on nine 512m x 8 bit fbga components the spd is programmed to jedec standard latency ddr4 2133 timing of 15 15 15 at 12v each 288 pin dimm uses gold contact fingers specifications design certification rohs compliant and halogen free memory cas latency 15 component for pcserver ecc y internal memory 4 gb internal memory type ddr4 lead plating gold memory clock speed 2133 mhz mem