Crucial 4GB DDR2 SDRAM Memory Module - 4 GB (2 x 2 GB) - DDR2 SDRAM - 667 MHz DDR2-667/PC2-5300 - 1.80 V - Non-ECC - Unbuffered - 200-pin - SoDIMM - CT2K2G2S667M More for the money with this high quality Product Offers premium quality at outstanding saving Excellent product 100% satisfaction