**4GB 512M x 64-Bit DDR3-1600 M Hz CL9 240-Pin DIMM** Kingston's 512M x 64-bit (4GB) DDR3-1600 M Hz CL9 SDRAM (Synchronous DRAM) memory module, based on sixteen 256M x 8-bit DDR3 FBGA components. This module has been tested to run at DDR3 1600 M Hz at a low latency timing of 9-9-9-27 at 1.65V. The SPD is programmed to JEDEC standard latency DDR3-1333 M Hz timing of 9-9-9 at 1.5V. This 240-pin DIMM uses gold contact fingers & requires +1.5V.