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本帖最后由 nekotheo 于 2025-2-14 09:17 编辑
省流：
5090FE烧毁用户使用的12V-2x6线缆是Moddiy于2024年发布的线材，H+的。50系用户需使用他们家25款H++产品。
Guru3D新闻稿：
A previous incident involving an RTX 5090 system highlighted the shortcomings of the older cable design. A verified report described how a power connector overheated and melted, prompting Moddiy to advise that cables built before 2025 should not be used with the new Nvidia GPUs based on the Blackwell architecture. These older cables, identified with an "H+" marking, were constructed using the previous 12VHPWR specifications. In contrast, the new cables, labeled as "H++," feature enhancements that improve power distribution and reduce the risk of overheating, ensuring they can handle the higher electrical loads demanded by modern GPUs.
The latest power cables have been redesigned to meet the 12V-2x6 standard, addressing the increased power requirements of Nvidia’s RTX 50-series GPUs. Unlike older cables based on the original 12VHPWR standard, the new models produced from 2025 onward come with thicker wiring and improved materials for both connectors and terminal housings. With a power rating of 675 watts and compatibility with standards like ATX 3.1 and PCIe 5.1, these cables provide a stable and efficient power interface for GPUs such as the RTX 5090 and RTX 5090D. The design also features three 8-pin connectors that combine into a single 12V-2x6 output, making them suitable for legacy power supplies that lack dedicated connectors for the new standard.
Independent testing by technical experts has shown that legacy cables can reach temperatures up to 150°C due to uneven power distribution. While some system integrators have not consistently reproduced these overheating conditions, the risk remains significant for gurus working with RTX 50-series GPUs. Considering that the RTX 5090 has a base MSRP of approximately $1,999 in the US market, it is important for gurus to verify that all system components, especially power delivery systems, meet the latest technical standards. This update to the cable design represents a technical adjustment aimed at maintaining both system safety and performance under high-demand conditions.
浏览器机翻：
之前涉及 RTX 5090 系统的一起事件凸显了旧电缆设计的缺陷。一份经过验证的报告描述了电源连接器如何过热和熔化，这促使 Moddiy 建议，2025 年之前制造的电缆不应与基于 Blackwell 架构的新型 Nvidia GPU 一起使用。这些带有“H+”标记的旧电缆是使用以前的 12VHPWR 规格制造的。相比之下，标记为“H++”的新电缆具有增强功能，可改善电力分配并降低过热风险，确保它们能够处理现代 GPU 所需的更高电气负载。
最新的电源线经过重新设计，符合 12V-2x6 标准，满足了 Nvidia RTX 50 系列 GPU 日益增长的功率要求。与基于原始 12VHPWR 标准的旧款电源线不同，从 2025 年开始生产的新型号的电线更粗，连接器和端子外壳的材料也得到了改进。这些电源线的额定功率为 675 瓦，兼容 ATX 3.1 和 PCIe 5.1 等标准，为 RTX 5090 和 RTX 5090D 等 GPU 提供了稳定高效的电源接口。该设计还具有三个 8 针连接器，可组合成单个 12V-2x6 输出，使其适用于缺少新标准专用连接器的传统电源。
技术专家的独立测试表明，由于电力分布不均匀，传统电缆的温度最高可达 150°C。虽然一些系统集成商并没有始终如一地重现这些过热情况，但对于使用 RTX 50 系列 GPU 的专家来说，风险仍然很大。考虑到 RTX 5090 在美国市场的基本建议零售价约为 1,999 美元，对于专家来说，验证所有系统组件（尤其是电力输送系统）是否符合最新技术标准非常重要。此次对电缆设计的更新代表了一项技术调整，旨在在高需求条件下保持系统安全性和性能。
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Burn baby burn! 全球第一例 5090 FE 接口烧毁事故
https://www.chiphell.com/thread-2671065-1-3.html |
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