G.SKILL announced an extreme low-latency, high-speed DDR4 memory kit at DDR4-4000 CL15-16-16-36 in a 32GB (8GBx4) capacity configuration under the classic Trident Z and the RGB-enabled Trident Z Royal memory series.

These memory kits are manufactured using Samsung B-die ICs to achieve the world's lowest latency of CL15 at DDR4-4000.

Previously, the best CAS latency that memory kits at the DDR4-4000 level could achieve was at CL17. This is surpassed by the new DDR4-4000 CL15-16-16-36 32GB (8GBx4) memory kit running under 1.5V, shown validated on the MSI MEG Z390 ACE motherboard and Intel Core® i7-9700K processor, according to G.SKILL.

A lower CAS latency typically means a bump in bandwidth performance, and this is no different on the latest AMD Ryzen platform. Normally, AMD Ryzen 9 3900X processor bandwidth with popular DDR4-3200 CL14 kit would fall around 50GB/s for memory read bandwidth in AIDA64. With the new ultra-efficient DDR4-4000 CL15 memory kit, the memory read bandwidth breaks 61GB/s in AIDA64 with a few additional tweaks, along with over 58GB/s in memory write and 65GB/s in memory copy bandwidth speed, as demonstrated in the following screenshot with the MSI X570 Unify motherboard and the AMD Ryzen 9 3900X processor.

This extreme low latency performance memory specification will support Intel XMP 2.0 for easy overclocking and will be available in Q4 2019.