Corsair CMSO4GX3M1A1333C9 4 GB (1x4GB DDR3-1333)

The Corsair CMSO4GX3M1A1333C9 4 GB ships as a single module with 4GB of DDR3 on board. It is specced for 1333 MT/s with a CAS latency of 9, working out to a true latency of about 13.5ns. 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.

Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Warranty coverage follows Corsair's standard policy — confirm regional terms on the listing. Every published spec is tabulated below, and compatibility against your current part list is checked automatically.