Free Express Shipping! Patriot 64GB Viper DDR5 6400 MHz UDIMM Memory Kit (2 x 32GB) 64GB (2 x 32GB) Capacity, 6400 MHz Clock Speed, PC5-51200, 288-Pin UDIMM, 1.35V, 40-40-40-77 Timings, On-Die ECC, Supports Intel XMP 3.0