Kingston KVR1066D3S7/4G 4 GB (1x4GB DDR3-1066)

The Kingston KVR1066D3S7/4G 4 GB ships as a single module with 4GB of DDR3 on board. Operating voltage sits at 1.35V. It is rated at 1066 MT/s with a CAS latency of 7, working out to a true latency of about 13.1ns. 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 and to watch live retailer pricing. Warranty coverage follows Kingston's standard policy — confirm regional terms on the listing. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.