Rambus releases second-generation RCD chip, DDR5-5600 for next-generation servers
The industry is now beginning to transition to a new generation of DDR5 memory to expand memory bandwidth. DDR5 memory adopts a new DIMM architecture and incorporates a number of innovations, enabling speed level jumps and supporting future expansion. In order to meet the increasing demand under high workloads in data centers, Rambus announced the launch of the second generation of Registering Clock Driver (RCD). As a key construction of DDR5 memory modules, it can provide a 5600 MT/s data transfer rate for next-generation server RDIMM and LRDIMM modules
Rambus’s first-generation RCD for DDR5 memory will be introduced to the market along with processors such as Intel Sapphire Rapids. The data transfer rate of its RDIMM is 4800 MT/s, which is 33% higher than the DDR4 RDIMM of 3200 MT/s in many current high-performance servers. RCD is a buffer located between the memory controller and the DRAM IC, which can redistribute the command/address signals in the module to improve signal integrity and connect more memory devices to a DRAM channel. As a buffer, RCD will increase the delay. It needs to support a very specific data transmission rate to work normally. The second generation of Rambus RCD is aimed at the data transmission rate of 5600 MT/s.