Kingston’s KHX8500D2K2/2G is a kit of two 1GB (1024MB) DDR2-1066 CL5 SDRAM (Synchronous DRAM) memory modules. Total kit capacity is 2GB (2048MB). Each module pair has been tested to run at DDR2-1066MHz at a latency timing of 5-5-5-15 at 2.2V. The SPD is programmed to JEDEC standard latency 800Mhz timing of 5-5-5-18 at 1.8V. Each 240-pin DIMM requires +1.8V.