Mushkin 971644A 4 GB (1x4GB DDR3-1066)

The Mushkin 971644A 4 GB comes as a single module with 4GB of DDR3 on board. It is specced for 1066 MT/s with a CAS latency of 7, working out to a true latency of about 13.1ns. 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. Mushkin backs the product through its standard warranty channels; check the listing for region-specific terms. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.