4.0GB KIT (2 X 2GB) PC2-6400 DDR2 800MHZ SO-DIMM 200 PIN MEMORYOTHER WORLD COMPUTING OWC 2 x 2. 0GB PC6400 DDR2 800MHz 200 Pin For Notebook, Desktop PC 4 GB (2 x 2GB) DDR2 800 PC2 6400 DDR2 SDRAM 800 MHz CL6 1. 80 V Non ECC 200 pin SoDIMM VPN: OWC6400DDR2S4MP SKU: RSC701357 UPC: SoDIMM 4 GB of memory makes a perfect symmetry with your latest model processor and boosts up your computer's performance Up to 800 MHz memory speed with CL6 latency to manage your routine softwares with pace and accuracy 200 pin pin DDR2