Crucial CT51272BA186DJ 4 GB (1x4GB DDR3-1866)

The Crucial CT51272BA186DJ 4 GB arrives as a single module with 4GB of DDR3 on board. It is rated at 1866 MT/s with a CAS latency of 13, working out to a true latency of about 13.9ns. 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.