clm_d57c4d3a250b43ea81f9b454f6320ddc_r1

VR2-0457

① SA Source

• Source: 開啟完整 SA 文章
• Section: Rack Level Infrastructure: Thermal
• Line hint: 553

Context Before

Rack Level Infrastructure: Thermal

Beyond the redesigned fanless front chassis and the 100% liquid-cooled compute tray, the most notable point in the Vera Rubin cooling architecture discussion was Jensen’s comment on coolant/water warm temperatures and the use of chillers. For many (for Mr. Market more broadly!) the statement that Vera Rubin can operate with 45C inlet temperatures, potentially avoiding mechanical compressor-based chillers, was viewed as a major surprise for much of the cooling supplier ecosystem. We instead view this as a continuation of existing trends.

Evidence

Major system vendors such as Lenovo and HPE have also been discussing 100% liquid-cooled architectures operating at 45C since early 2025

Context After

Source: HPE

② Atomic Claim

Lenovo、HPE 等主要 system vendors，自 2025 年初就已討論可在 45°C 運作的 100% liquid-cooled architectures。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "attribute": "TEMPERATURE",
  "context_nodes": [
    {
      "id": "02_companies/HPE",
      "label": "HPE"
    }
  ],
  "entity": {
    "id": "02_companies/Lenovo",
    "label": "Lenovo"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "2025",
      "45",
      "100%"
    ],
    "temporal_mentions": [
      "2025"
    ]
  },
  "value": {
    "numeric_mentions": [
      "2025",
      "45",
      "100%"
    ],
    "value_text": "Lenovo、HPE 等主要 system vendors，自 2025 年初就已討論可在 45°C 運作的 100% liquid-cooled architectures。"
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	Lenovo	Lenovo
context_0	HPE	HPE

⑤ Human Review

請在 Properties 逐項確認：

• 原文 → Atomic Claim 是否忠實
• Atomic Claim → Semantic Frame 是否忠實
• Canonical Entity mapping 是否正確
• Epistemic mode 是否保留原文語氣
• 最後選擇 review_action

Review state

Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。