Mushkin Essentials 4 GB (2x2GB DDR2-667)

The Mushkin Essentials 4 GB ships as 2 modules of 2GB each with 4GB of DDR2 on board. It is specced for 667 MT/s with a CAS latency of 5, working out to a true latency of about 15ns. Operating voltage sits at 1.35V. Once memory clears 3600 MT/s, frequency gains taper off, so the 4GB on offer here is the spec that counts for esports and everyday use.

Use the PlanMyPC system builder to verify it works alongside your other components. Warranty coverage follows Mushkin'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.