Several years ago, several memory plants, including SK Hynix, began the first new DDR5 memory development trials. At CES 2020, we also saw some DDR5 RDIMM products. At the show, SK Hynix demonstrated a 64GB DDR5 RDIMM memory module with ECC check. The model is HMCA8GR8MJR4C-EB with a nominal data transfer rate of 4800 MT/s.
(Image via AnandTech)
The module contains 20 H5CNAG4NMJ memory chips, as well as idT P8900-Z2 register clock drivers (RCDs). The markings are somewhat different compared to the 16GB RDIMM products at the end of 2018.
Like the DDR4 memory module, the DDR5 RDIMM is slightly longer in the middle of 288 pins and is designed to reduce resistance during plug-in. However, the design layout of the two anti-stick is slightly different, in order to prevent the failure of different platforms to mix.
It is not clear whether SK Hynix has started to provide samples of its DDR5 RDIMM to server platform developers, but at least it depends on the CPU manufacturer’s new platform development speed.
Guess that by 2021, we will have the first DDR5 platforms (the first to confirm support for DDR5 memory is based on the Intel Xeon Sapphire Rapids Aurora Supercomputing).