Kingston's KHX14400D3LLK2/2G is a kit of two 128M x 64-bit 1GB (1024MB) DDR3-1800 CL8 SDRAM (Synchronous DRAM) memory modules, that are NVIDIA® SLI™ -Ready. based on sixteen 64M x 8-bit DDR3 FBGA components per module. Each module pair has been tested to run at DDR3-1800 MHz at a low latency timing of 8-8-8 at 1.9V. The SPDs are programmed to JEDECstandard latency DDR3-1066Mhz timing of 7-7-7 at 1.5V. Each 240-pin DIMM uses gold contact fingers and requires+1.5V.