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Domain: jedec.org
Stories and comments across the archive that link to jedec.org.
Stories · 6
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Next-Generation DDR5 RAM Will Double the Speed of DDR4 In 2018 (arstechnica.com)
An anonymous reader quotes a report from Ars Technica: You may have just upgraded your computer to use DDR4 recently or you may still be using DDR3, but in either case, nothing stays new forever. JEDEC, the organization in charge of defining new standards for computer memory, says that it will be demoing the next-generation DDR5 standard in June of this year and finalizing the standard sometime in 2018. DDR5 promises double the memory bandwidth and density of DDR4, and JEDEC says it will also be more power-efficient, though the organization didn't release any specific numbers or targets. Like DDR4 back when it was announced, it will still be several years before any of us have DDR5 RAM in our systems. That's partly because the memory controllers in processors and SoCs need to be updated to support DDR5, and these chips normally take two or three years to design from start to finish. DDR4 RAM was finalized in 2012, but it didn't begin to go mainstream until 2015 when consumer processors from Intel and others added support for it. DDR5 has no relation to GDDR5, a separate decade-old memory standard used for graphics cards and game consoles. -
Enterprise SSDs, Powered Off, Potentially Lose Data In a Week
New submitter Mal-2 writes with a selection from IB Times of special interest for anyone replacing hard disks with solid state drives: The standards body for the microelectronics industry has found that Solid State Drives (SSD) can start to lose their data and become corrupted if they are left without power for as little as a week. ... According to a recent presentation (PDF) by Seagate's Alvin Cox, who is also chairman of the Joint Electron Device Engineering Council (JEDEC), the period of time that data will be retained on an SSD is halved for every 5 degrees Celsius (9 degrees Fahrenheit) rise in temperature in the area where the SSD is stored. If you have switched to SSD for either personal or business use, do you follow the recommendation here that spinning-disk media be used as backup as well? -
JEDEC Fiddles With DDR4 While LRDIMM Burns
An anonymous reader writes "JEDEC hasn't finalized the upcoming DDR4 standard yet, but it seems they left out licensing some crucial IP for (the already finalized and shipping) LRDIMMs (for use on data center servers). As a result they are only produced by one source which is facing some hurdles justifying their copying of IP. This article discusses how DDR4 is based on LRDIMMs and the future of memory. Quoting: 'JEDEC finalized the LRDIMM standard without securing licensing on load reduction and rank multiplication. Inphi, currently the only maker of LRDIMM buffer chipsets – others have backed off – lost a challenge of Netlist IP at the USPTO. As a result the Netlist patents have become stronger and are going to come back and bite Inphi in Netlist vs. Inphi, which was stayed pending these patent reexaminations – patents which survive re-examination can never again be challenged in court. NLST patents ’537 and ’274 survived with all claims intact, which is a powerful statement on the strength of their IP – Inphi has appealed to the BPAI, but the USPTO decision is telling.'" -
DDR4 May Replace Mobile Memory For Less
Lucas123 writes "The upcoming shift from Double Data Rate 3 (DDR3) RAM to its successor, DDR4, will herald a significant boost in both memory performance and capacity for data center hardware and consumer products alike. Because of the greater density, 2X performance and lower cost, the upcoming specification and products will for the first time mean DDR may be used in mobile devices instead of LPDDR. Today, mobile devices use low-power DDR (LPDDR) memory, the current iteration of which uses 1.2v of power. While the next generation of mobile memory, LPDDR3, will further reduce that power consumption (probably by 35% to 40%), it will also likely cost 40% more than DDR4 memory." -
DDR4 May Replace Mobile Memory For Less
Lucas123 writes "The upcoming shift from Double Data Rate 3 (DDR3) RAM to its successor, DDR4, will herald a significant boost in both memory performance and capacity for data center hardware and consumer products alike. Because of the greater density, 2X performance and lower cost, the upcoming specification and products will for the first time mean DDR may be used in mobile devices instead of LPDDR. Today, mobile devices use low-power DDR (LPDDR) memory, the current iteration of which uses 1.2v of power. While the next generation of mobile memory, LPDDR3, will further reduce that power consumption (probably by 35% to 40%), it will also likely cost 40% more than DDR4 memory." -
Alternatives To .DOC As Standard WP Format?
D. C. Sessions asks: "I'm on the Software Task Group of a standards body (JEDEC) which is, among other things, responsible for the DDR memory standard. You may have heard of it. Currently standards drafts must be submitted in an editable word processing format, which right now is interpreted as FrameMaker or MS Word. I find not only offensive, but dangerous that these standards -should- outlive the current MS software that can manipulate them. I've gotten some sympathy on 'bit rot' from the rest of the committee based on showing what current flavors of Word do to documents saved with older versions, but the problem is this: What do I propose as a replacement?" Two that come to mind right off of the top of my head are LaTeX and, of course, HTML. Any other formats that can work just as well as .DOC in most situations and are cross-platform to boot?"It should (obviously) be an open file format, preferably with an open source tool to access it. It absolutely must be usable on LoseBlows, should be usable on Mac, and (for my own sake) on Linux and Solaris. It must be capable of structured documentation, numbering, tables, and embedded vector graphics. I just don't know of such a beast at present."