EDGE K1240-208073-PE 2GB DDR2 SDRAM Memory Module - 2 GB (2 x 1GB) - DDR2-667/PC2-5300 DDR2 SDRAM - 667 MHz - ECC - Registered - 240-pin - DIMM - Lifetime Warranty

667 MHz of memory speed with Registered signal makes your computer great at multitasking 2 GB memory smoothly executes complex apps and games DDR2-667/PC2-5300 operates at up to 400 MHz data bus speed with minimal power consumption and as a result, you get optimal computer performance with an improved memory heat dissipation