Kingston ValueRAM's KVR1333D3N9K2/4G is a kit of two 256M x 64-bit 2GB (2048MB) DDR3-1333 PC3-10600 CL9 SDRAM (Synchronous DRAM) memory modules, based on sixteen 128M x 8-bit DDR3-1333 FBGA components per module. Total kit capacity is 4GB (4096MB). The SPDs are programmed to JEDEC standard latency 1333Mhz timing of 9-9-9 at 1.5V. Each 240-pin DIMM uses gold contact fingers and requires +1.5V.