Crucial CT4G3ERSLS41339 4 GB (1x4GB DDR3-1333)

The Crucial CT4G3ERSLS41339 4 GB ships as a single module with 4GB of DDR3 on board. Operating voltage sits at 1.35V. It is specced for 1333 MT/s with a CAS latency of 9, working out to a true latency of about 13.5ns. For gaming, capacity matters more than raw speed past 3600 MT/s — 4GB comfortably covers esports and everyday use.

Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Support and warranty service run through Crucial, with terms that vary by region. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build.