Silicon Power SP004GBSFU266X02 4 GB (1x4GB DDR4-2666)

The Silicon Power SP004GBSFU266X02 4 GB comes as a single module with 4GB of DDR4 on board. It is rated at 2666 MT/s with a CAS latency of 19, working out to a true latency of about 14.3ns. 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.

PlanMyPC's builder flags compatibility problems automatically and tracks the latest memory kit deals from multiple stores. Support and warranty service run through Silicon Power, 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.