VR2-0475
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Rack Level Infrastructure: Thermal - Line hint:
567
Context Before
Source: Schneider
So 45C cooling is not entirely new. Even with this capability, most operators deploying Blackwell are still designing for 20-30C water temperatures. As a rough approximation, current Blackwell inlet temperatures are around room temperature, with outlet temperatures in the 40-50C range. Only a small number of operators, such as Firmus, have removed chillers from the loop (even with systems like GB200) in favor of highly optimized economizer designs where climate permits. Avoiding the compression step in mechanical cooling can deliver meaningful energy efficiency gains.
Evidence
In Blackwell reference architectures, the ceiling temperature is around 65C (e.g. see the Vertiv GB200 NVL72 reference design)
Context After
Source: Vertiv
② Atomic Claim
在 Blackwell reference architectures 中，ceiling temperature 約為 65°C，例如 Vertiv GB200 NVL72 reference design。
- Epistemic Mode:
ASSERTED - Mapping Status:
COMPLETE
③ Semantic Frame
{
"attribute": "TEMPERATURE",
"context_nodes": [
{
"id": "04_knowledge_base/GB200 NVL72",
"label": "GB200 NVL72"
},
{
"id": "04_knowledge_base/Reference Design",
"label": "reference design"
}
],
"entity": {
"id": "04_knowledge_base/Blackwell",
"label": "Blackwell"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [
"65"
],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [
"65"
],
"value_text": "在 Blackwell reference architectures 中，ceiling temperature 約為 65°C，例如 Vertiv GB200 NVL72 reference design。"
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | Blackwell | Blackwell |
| context_0 | GB200 NVL72 | 04_knowledge_base/GB200 NVL72 |
| context_1 | reference design | 04_knowledge_base/Reference Design |
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。