EDGE Tech 2GB DDR2 SDRAM Memory Module - 2GB (1 x 2GB) - 667MHz DDR2-667/PC2-5300 - ECC - DDR2 SDRAM - 240-pin

Up to 667 MHz speed with Fully Buffered signal is enough to run heavy software smoothly while surfing web with dozens of tabs open 2 GB memory allows you to have more programs open at a time DDR2 SDRAM interface synchronizes electrical and clock signals for an efficient data transfer rate