2PCS 4GB PC2-6400 DDR2-800 200pin
SODIMM Maximum Memory: 3 GB with Windows Vista 32-bit 8 GB with Windows Vista 64-bit
Expansion: 2 Sockets Notebooks with 32-bit operating systems, if 4GB is installed, the recognized memory may be reduced to 3.0 or 3.5GB or less (depending on system configuration and memory allocation). Notebooks with 64-bit operating systems, can recognize the full 8GB. Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS.
Compatible with: Lenovo ThinkPad X61 7676, 7678, 7679-xxx Lenovo ThinkPad X61 7673, 7674, 7675-xxx