#jedec
More than ever, manufacturers have been pushing memory to the absolute limits.


JEDEC, the standards committee, is pretty conservative.


Yet the moment DDR5 launched, everyone threw JEDEC out the window.

Intel + AMD's memory controllers were *not* ready to handle it.
October 3, 2025 at 7:45 PM Everybody can reply
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DDR5-4800 was the baseline.


Day one kits were pushing 6000+. Today, even 8000+.


On-die error correction is masking chips that would have been binned as trash in the DDR4 era.

The gap between JEDEC spec and retail has never been wider.
October 3, 2025 at 7:45 PM Everybody can reply
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channel count but also actual achievable (and in fact JEDEC default if the RAM supports it) DIMM clockspeed on Epyc is higher than desktop Ryzen now. 5600 is where official JEDEC ends for desktop (expo gets up to 6000ish). 6400 is JEDEC spec for zen 5 epyc and threadripper.
September 13, 2025 at 2:14 PM Everybody can reply
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PSA about SSDs. Although very robust, they shouldn't be used as cold storage as they will lose data if left unpowered for a long time.
JEDEC specs imply a minimum of one year at 30°C, but most devices far exceed that.
Still a good idea to power cycle your portable SSD if you have one.
November 8, 2024 at 12:13 PM Everybody can reply
computers be like CPU GPU PSU JEDEC RAM MOBO MPO PBO HBCC AMD MSI FPS
April 26, 2025 at 10:25 PM Everybody can reply
1 reposts 3 likes
国際メモリワークショップでもCOMPUTEXでも、DDR6についての新情報は一切なし。こりゃ現行のJEDECドラフトはポシャったぬ。DDR5は2030年までは引っ張る。もしかしてUSBと同じくらい永遠だったりして。
May 21, 2025 at 10:02 AM Everybody can reply
Looks like Dell’s original CAMM spec which was donated to JEDEC has turned into LPCAMM, even smaller footprint and up to 128GB! 🔥

Can’t wait to see how HW vendors will innovate in SFF kits w/extra space and capabilities in 2024+

trib.al/N4NqsTl
Samsung Unveils LPCAMM: up to 128GB of DDR5 for Laptops in 60% Less Space
Shrinking the memory, increasing the speed.
trib.al
September 26, 2023 at 3:09 AM Everybody can reply
This is a brand new Ryzen 7 5800XT which I literally just installed. I was having similar but many more issues on my previous Ryzen 7 1700X which I used before. I'm running the memory at its rated 3200. Obviously would prefer not to drop to JEDEC but I haven't tried yet
April 26, 2025 at 4:45 PM Everybody can reply
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JEDEC تكشف عن معايير جديدة لذاكرة GDDR7
bit.ly/4c2HNeq
March 7, 2024 at 7:40 PM Everybody can reply
Intel's plan to make MRDIMM a JEDEC standard has been public knowledge since July. I have been aware of the related patents since 2023 and with the consolidation of the plans, I thought it would be interesting to disclose the patent. Therefore, MRDIMM is old news to me

www.jedec.org/news/pressre...
JEDEC Unveils Plans for DDR5 MRDIMM and LPDDR6 CAMM Standards to Propel High-Performance Computing and AI | JEDECLogin requiredLogin required
www.jedec.org
November 16, 2024 at 10:59 PM Everybody can reply
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Officially published as JESD209-6 in mid-2025, LPDDR6 “significantly boosts memory speed and efficiency” for everything from smartphones to AI edge devices.

www.techwire.biz/news/jedec-o...

#LPDDR6 #JEDEC #News
JEDEC Officially Unveils LPDDR6: Supercharging the Next Wave of Mobile and AI Devices
LPDDR6 provides balance of power efficiency, robust security options and high performance.
www.techwire.biz
July 12, 2025 at 5:17 PM Everybody can reply
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JEDEC разказа за работата над UFS 5.0 – скоростта на паметта на смартфоните ще достигне 10,8 GB/s

Организацията JEDEC Solid State Technology Association обяви, че скоро ще финализира разработването на новата версия на универсалния стандарт за флаш-памет UFS 5.0. Той е предназначен за мобилните…
JEDEC разказа за работата над UFS 5.0 – скоростта на паметта на смартфоните ще достигне 10,8 GB/s
Организацията JEDEC Solid State Technology Association обяви, че скоро ще финализира разработването на новата версия на универсалния стандарт за флаш-памет UFS 5.0. Той е предназначен за мобилните устройства и други системи, които изискват висока производителност и ниска консумация на енергия. Скоростта за последователно четене и запис ще достигне 10,8 GB/s, като същевременно се запази обратната съвместимост с оборудването от типа UFS 4.x. За да осигури висока скорост и енергийна ефективност, новият стандарт използва най-съвременни решения на MIPI Alliance: усъвършенстваната технология MIPI M-PHY 6.0 с протокола за управление UniPro 3.0 и режима High-Speed ​​​​Gear 6 (HS-G6), който удвоява скоростта за пренос на данни на настоящия HS-G5.
www.kaldata.com
October 7, 2025 at 10:03 AM Everybody can reply
メモリのCrucial Pro、DDR4は3200の定格なんだけどXMP2.0でJEDEC準拠以外のプロファイルがある感じか。通常は複数枚挿しでクロック下がるけどXMPで影響なく3200で動作するみたい(動くかはCPUやマザーボードとの相性もあるかもだけど)

すべてのプロファイルに対応、Crucialからヒートスプレッダ付きデスクトップメモリーキット「Crucial PRO」シリーズ販売開始 | Ark Tech and Market News Vol.3004390 www.ark-pc.co.jp/news/article...
すべてのプロファイルに対応、Crucialからヒートスプレッダ付きデスクトップメモリーキット「Crucial PRO」シリーズ販売開始 | Ark Tech and Market News Vol.3004390
Crucialからほぼすべてのプロファイルに対応したCrucial独自の専用ヒートスプレッダー搭載デスクトップ向けメモリーキット「Crucial Pro」シリーズ計3モデルが登場、2023年5月31日(水)より販売を開始している。 DDR5 5600MT/s 32GB(16GBx2)キット「CP2K16G56C46U5」と、DDR4 3200MT/s 32GB(16GBx2)キット「CP2K16G...
www.ark-pc.co.jp
August 11, 2025 at 2:04 PM Everybody can reply
1 quotes
ふと気づいたのですが、DDR6についての発表が、ほぼ1年間、まったく出てないのでは? JEDECのドラフトの新版や、ドラフト版を実装してサンプル出荷をする等の発表が、この1年間、完全に途絶えてる。
もしかして今のドラフトはポシャって仕切り直し? もし今月の国際メモリワークショップで何もなければ、ポシャり確定ですぬ。
May 10, 2025 at 4:20 AM Everybody can reply
Jedec Publishes New CAMM2 Memory Module Standard (jedec.org)

Main Link | HN Post
December 11, 2023 at 11:03 AM Everybody can reply
JEDEC read doesn't work, so code problem. Or wiring? Probably code though.
Oh no . . . is this flash chip reading all zeros because my code is wrong or because it's actually empty?
June 1, 2024 at 10:31 PM Everybody can reply
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