DRAM and Motherboard Makers Demonstrate Quad-Channel DDR4-4000+ Operation
 

Over the course of Computex, manufacturers of memory modules and motherboards alike took to the show to showcase the latest developments in high-speed quad-channel memory configurations. Powered by Intel’s new Skylake-X CPUs, manufacturers have been able to get quad-channel data transfer rates running at 4000 MT/s and higher. This increased memory bandwidth should, in turn, help Intel’s new Core i7 and i9 processors offer significantly higher performance than predecessors in applications that heavily rely on memory transactions.
http://www.anandtech.com/show/11524/...4000-operation