EDGE Tech 4GB DDR2 SDRAM Memory Module - 4GB (2 x 2GB) - 533MHz DDR2-533/PC2-4200 - ECC - DDR2 SDRAM - 240-pin DIMM

533 MHz of memory speed with Unbuffered signal allows you to browse web, listen to songs and use routine software simultaneously DIMM 4 GB of memory to refine your computers performance 240-pin-pin DDR2 SDRAM 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