Give your laptop or mobile system a memory upgrade with the Patriot Memory Signature SODIMM Memory Module, PSD22G8002S. This 800 MHz memory module is designed specifically to support mobile systems and high-performance laptops. To ensure compatibility and reliability, the 2 GB DDR2 PC2-6400 memory module is fully validated and tested at 800 MHz. A memory upgrade and expanded storage capacity with this SODIMM memory module can help your laptop to run more efficiently. It can give it a boost in performance and speed, as well as your overall enjoyment of your computer.