SK hynix has unveiled the fastest DDR5 MCR DIMM server memory - it is 80% faster than standard modules

SK hynix has announced the fastest DDR5 server memory modules - it has 8000 MT/s (or 8 Gbit/s).
This is about 80% faster than the standard DDR5-4800 modules used in the server segment.
The key feature of SK hynix DDR5-8000 server memory is Multiplexer Combined Ranks (MCR) technology, developed in collaboration with Intel and Renesas.
By using a special chip developed by Renesas that acts as a data buffer, SK hynix has made it possible to simultaneously use two memory ranks (chips on both sides of the module) to increase the data channel width to 128 bits instead of the usual 64 bits.
The Renesas chip acts as an intermediate between the CPU and the RAM module, as shown in the diagram below.
The new memory architecture provides the ability to simultaneously route twice as much information to the CPU as conventional DRAM modules.
As a result, achieved a significant increase in the speed of the modules without the need to increase the frequency of the memory chips themselves.According to the vice president and general manager of memory interface development division in Renesas, Sameer Kuppahalli (Sameer Kuppahalli), the development of the data buffer took three years of intensive work.
Intel, on the other hand, says it is looking forward to the application of MCR technology by future Xeon platforms.
SK hynix expects that the new memory will be in demand in the HPC-segment, but it has not yet announced the date of mass production of MCR DIMM memory.