DDR 5 Ram to relase by 2019-2020


Active Member
Jul 13, 2009
DDR5 SDRAM, in computing interface development, is the abbreviation for the fifth generation of Double Data Rate Synchronous Dynamic Random Access Memory. DDR5 is planned to reduce power consumption once again, while doubling bandwidth and capacity relative to DDR4 SDRAM.[2]

A 2016 presentation by Intel suggested a JEDEC plan to release a 2016 DDR5 SDRAM specification, with the memory being available for end user purchase in 2020.[3]

In March 2017, JEDEC announced its plan for the DDR5 specification release in 2018.[4] JEDEC's Server Forum 2017[5][6] claimed a date to offer a DDR5 SDRAM preview on June 19, 2017 accompanied by a DDR5 SDRAM Workshop on October 31 – November 1, 2017.[7] Rambus announced a working DDR5 RAM prototype in September 2017, with availability not expected until 2018 3 Quarter.[1] Samsung announced in July 2018 that they would ship low power DDR5 modules (LPDDR5) "soon", even though the DDR5 specification was not yet finalized.[8]

Rambus has working silicon in its labs for DDR5, the next major interface for DRAM dual in-line memory modules (DIMMs). The register clock drivers and data buffers could help double the throughput of main memory in servers, probably starting in 2019 — and they are already sparking a debate about the future of computing.

The JEDEC standards group plans to release before June the DDR5 spec as the default memory interface for next-generation servers. However, some analysts note that it comes at a time of emerging alternatives in persistent memories, new computer architectures, and chip stacks.

“To the best of our knowledge, we are the first to have functional DDR5 DIMM chipsets in the lab,” said Hemant Dhulla, a vice president of product marketing for Rambus. “We are expecting production in 2019, and we want to be first to market to help partners bring up the technology.”

DDR5 is expected to support data rates up to 6.4 Gbits/s and deliver 51.2 GBytes/s max, up from 3.2 Gbits/s and 25.6 GBytes/s for today’s DDR4. The new version will push the 64-bit link down to 1.1 V and burst lengths to 16 bits from 1.2 V and 8 bits. In addition, DDR5 lets voltage regulators ride on the memory card rather than the motherboard.

In parallel, CPU vendors are expected to expand the number of DDR channels on their processors from 12 to 16. That could drive main memory sizes to 128 GB from 64 GB today.

DDR5 is expected to first appear on high-performance systems running large databases or memory-hungry applications such as machine learning. While some servers may lag adopting DDR5 for six months or so, “it’s just a couple of quarters, not a couple of years … everyone wants a fatter memory pipe,” said Dhulla.

About 90% of today’s servers use registered or load-reduced DIMMs that employ register clock drivers and data buffers. The chips generally are sold for less than $5 by companies including Rambus, IDT, and Montage.

SOURCE 1: https://en.wikipedia.org/wiki/DDR5_SDRAM
SOURCE 2: https://www.eetimes.com/document.asp?doc_id=1332322