DDR5: More than a generational jump
Relieve the bandwidth-per-core crunch to pull peak computing performance
1Under memory-intensive workloads, DDR5 is designed to deliver 1.87x the bandwidth as a result of double burst length, double the banks and bank groups, and significantly higher speed than DDR4, as established by JEDEC, an independent organization that develops open standards for the microelectronics industry.
2DDR5 launch data rate of 4800MT/s transfers 1.5x (50%) more data than the maximum standard DDR4 data rate of 3200MT/s. JEDEC projected speeds of 8800MT/s are 2.75x faster than DDR4’s maximum standard data rate of 3200MT/s.
3Initial DDR5 Server DRAM shipments will not include the VLP RDIMM variation. It will come later in the year.
4Initial shipments will be at 4800MT/s with higher speeds expected to reach at least 6400MT/s in the future.
5Based on Status of the Memory Industry 2021, Yole Développement, June 14, 2021
6On DDR4 server memory, power management was on the motherboard instead of the module, powering empty slots as well as those in use.