Crucial CT51264AC800 4 GB (1x4GB DDR2-800)

The Crucial CT51264AC800 4 GB arrives as a single module with 4GB of DDR2 on board. It is rated at 800 MT/s with a CAS latency of 6, working out to a true latency of about 15ns. Operating voltage sits at 1.35V. 4GB gives you enough headroom for esports and everyday use; past 3600 MT/s, extra frequency brings diminishing returns.

Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current memory kit prices across retailers. Warranty coverage follows Crucial's standard policy — confirm regional terms on the listing. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build.