沒有所謂的 675W，最大依舊維持 600W 設計。
近期針對 12V-2×6 的「H+」與「H++」似乎有一番爭論，甚至還有「H++」的 12V-2×6 接頭可以到 675W 的可能性，但這一切都只是網路傳說。
基於 PCIe Base 6.0 的 12V-2×6 接頭規範是在 2023 年 8 月被核准。在 PCI-SIG 組織的 ECN（Engineering Change Notice）文件中，簡明扼要提到新的 CEM 5.1 定義的 12V-2×6 接頭就是為了取代 CEM 5.0 定義的 12VHPWR（啊… 你還真是短命…），雖然 CEM 5.1 取代了 CEM 5.0，但 12V-2×6 的最大功耗並沒有因此改變。
12V-2×6 接頭依舊維持 150W（0000b）、300W（0001b）、450W（0010b）與 600W（0011b）的最大承受功耗。
12VHPWR 那麼快被取代的原因，我們大家都相當清楚，就是全球發生許多起接頭熔毀的案例，以至於 PCI-SIG 的相關成員（SPONSORS：NVIDIA）發起了定義更正。
至於所謂的「H+」與「H++」則是與 PCI-SIG 沒有任何關係，也就意味著網路上傳出的 675W 最大承受功耗並沒有出現 PCI-SIG 對 12V-2×6 的規範中。就我們與多家 AIC 合作夥伴進行溝通，所謂的「H+」與「H++」是版本區別，甚至有部分 AIC 合作夥伴已經在 2023 年 5 月開始導入「H++」的 12VHPWR 接頭（當時還未更改為 12V-2×6）。
「H+」可以視為最初版本的 12VHPWR，或者是尚未更改 12 + 4 PIN 中的 4 Detection PIN 版本；「H++」則可以直接稱為 12V-2×6，這版本主要是將 12 + 4 PIN 中的 4 Detection PIN 改短，讓使用者將接頭插比較深，方能接觸使用，避免因接觸問題而導致接頭熔毀。
至於 48VHPWR 也會更改為 48V-1×2。
Recently, there seems to be some debate surrounding the “H+” and “H++” variants of the 12V-2×6 connector, with speculation even suggesting a potential for the “H++” 12V-2×6 connector to handle up to 675W. However, all of this remains as internet speculation.
The specification for the 12V-2×6 connector based on PCIe Base 6.0 was approved in August 2023. According to documents from PCI-SIG, it succinctly mentions that the new 12V-2×6 connector defined by CEM 5.1 is intended to replace the 12VHPWR defined by CEM 5.0 (Rest in peace… you were short-lived…). While CEM 5.1 supersedes CEM 5.0, the maximum power consumption of the 12V-2×6 connector has not changed.
The 12V-2×6 connector still maintains maximum power ratings of 150W (0000b), 300W (0001b), 450W (0010b), and 600W (0011b).
The reason for the rapid replacement of 12VHPWR is well understood by everyone – there have been numerous cases of connector meltdown worldwide, prompting PCI-SIG and its related members (SPONSORS: NVIDIA) to initiate corrective definitions.
As for the so-called “H+” and “H++,” they are not related to PCI-SIG, meaning that the reported maximum power consumption of 675W has not been included in the PCI-SIG specifications for the 12V-2×6 connector. Based on our communications with several AIC partners, the terms “H+” and “H++” denote version differentiations. Some AIC partners even began implementing the “H++” 12VHPWR connector (before it was changed to 12V-2×6) as early as May 2023.
“H+” can be considered the initial version of 12VHPWR or the version without the 4 Detection PINs in the 12 + 4 PIN configuration. “H++,” on the other hand, can directly be referred to as 12V-2×6. This version mainly involves shortening the 4 Detection PINs in the 12 + 4 PIN configuration, allowing users to plug the connector in deeper to ensure proper contact and prevent connector meltdown issues due to poor contact.
Translated by ChatGPT 3.5