Crucial CT4G4RFS8266 4 GB (1x4GB DDR4-2666)

The Crucial CT4G4RFS8266 4 GB ships 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.

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. Crucial backs the product through its standard warranty channels; check the listing for region-specific terms.