Kingston KHX5300S2LLK2/4G 4 GB (2x2GB DDR2-667)

The Kingston KHX5300S2LLK2/4G 4 GB comes as 2 modules of 2GB each with 4GB of DDR2 on board. It is specced for 667 MT/s with a CAS latency of 4, working out to a true latency of about 12ns. Operating voltage sits at 1.35V. 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 Kingston, with terms that vary by region. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.