Kingston ValueRAM's KVR667D2N5K2/2G is a kit of two 128M x 64-bit (1024MB) CL5 DDR2-677 SDRAM (Synchronous DRAM) memory modules. These two modules are identical and are designed and tested to meet Dual Channel Architecture requirements. Total kit capacity is 2048 MB. Each 240-pin DIMM uses gold contact fingers and requires +1.8V.