G.Skill's DDR4-4400 kit seizes the four-module memory speed crown
 

Super-fast memory kits composed of two modules are all well and good, but some folks need large capacity to go with wickedly-high clock speeds. Last week Corsair claimed to have made the world's fastest four-DIMM 32 GB memory kit with its 4333 MT/s set. However, today G.Skill has trumped that figure with its DDR4-4000 four-module kit. The DIMMs' Samsung B-die chips are rated for CL19-19-19-39 timings and use Samsung B-die chips clocked at a sky-high 4400 MT/s.

http://techreport.com/news/32852/g-s...ry-speed-crown