Tracked topic
… Source: JEDEC 3 Comments on JEDEC SPHBM4 Standard Enables HBM4-Class Bandwidth on Organic Substrates 1 I wonder what kind of side-effects of quadrupling the effective clock speed of the data lines is going to have. …
… 2 Minuten · 267 Wörter · 1,908 Zeichen 1.0× 高带宽内存速度快、体积小，如今对于大型 AI 加速器几乎已不可或缺。不幸的是，成本高的并不仅仅是内存本身。计算裸片与 HBM 堆栈之间的组合还需要复杂的中介层、先进的 2.5D 集成，以及相应受限的封装容量。借助 SPHBM4，JEDEC 现在旨在至少缓解这一问题的部分影响。已发布的规范 JESD330-4 描述了“Standard Package High Bandwidth Memory”，简称 SPHBM4。这并不是定义一种全新的 DRAM 类型，而是为现有 HBM4 内存堆栈提供一种替代连接方式。…
… JEDEC will mit SPHBM4 nun zumindest einen Teil dieses Problems entschärfen. …
… New! tREFI, tRRDS, tWR, ULL Enable — Unified Latency Lock and VDDP V . 🫡 — 1usmus 🇺🇦 @1usmus April 24, 2026 据他所说，Ultra Low Latency 模式本质上只是通过若干子时序对 EXPO 配置文件的扩展。据称新增了 tREFI、tRRDS 和 tWR。此外，还据称加入了“ULL Enable”和 Unified Latency Lock 这两个设置。最后还新增了电压 VDDP。 作为参考的 JEDEC 时序值 但这在具体层面上意味着什么？在详细讨论这些时序之前，我们需要先建立一…
… This refers to the interval between two Activate timings to the same bank group, and here JEDEC does in fact specify a higher value than many ICs can actually achieve. 8 cycles or 5 ns, whichever is greater, must be set according to JEDEC. …
… AMD EPYC Server CPUs support JEDEC-standard memory technologies. The JEDEC standard multiplexed rank DIMM MRDIMM technology is not yet on the market. …
… In F1 25, the ULL kit outclassed a DDR5-6000 CL26-36-36-96 kit by 4.2%, and beat out JEDEC standards at 5600 MT/s by nearly 14%. Similarly, in Cyberpunk 2077, the ULL kit was around 3.7% faster than the standard EXPO kit, and 12.7% faster than JEDEC standards. …
… DDR5 MRDIMMs Give Life To Servers That Were Hoping For DDR6 To Address Bandwidth Requirements The MRDIMM architecture was introduced in the early 2020s by JEDEC. …
… 0 70 140 210 280 350 420 Trident Z5 NEOX 32 GB 6000 CL36-36-36-36-76-112 @1.35V 304.11 Trident Z5 NEOX 32 GB 6000 CL36-36-36-36-96-132 @1.35V 302.98 Trident Z5 NEO 32 GB 6000 CL30-36-36-76-112 @1.35V 301.02 Trident Z5 NEOX 32 GB 4800 JEDEC 292.56 0 50 100 150 200 250 300 Trident Z5 NEOX 32 GB 6000 … …