Kingston ValueRAM 1 GB Kit (2x512MB Modules) 667MHz PC2-5300 DDR2 DIMM Desktop Memory (KVR667D2N5K2/1G) 1 GB kit including two 512 MB modules of 667MHz DDR2 Desktop Memory Specifically designed and tested for compatibility in various makes and models of desktop computers 240-pin unbuffered DIMM From the industry leader in PC memory Backed by a lifetime warranty and free technical support