VR2R-0361::SPLIT03
① SA Source
- Source: 開啟完整 SA 文章
- Section:
PCB Materials Upgrade and Area Growth - Line hint:
479
Context Before
Source: Nvidia VR NVL72 Component BoM and Power Budget Model ↗
Evidence
Beside material upgrade, the other driver of PCB content value is the increase of high end PCB area coverage. In Grace Blackwell, the only boards with high end material are the Bianca board with M7 grade CCL and the NVSwtich board with M8 grade CCL, leaving front half of the compute tray uncovered by high end PCB board. For VR NVL72, the Orchid board and the midplane board increases the high end PCB board area in the compute tray covering the front half of the chassis. With the Strata board bigger than the Bianca board and the extra peripheral boards in the compute tray, we estimate that the area of high end PCB board increases by ~2.3 times from GB300 to VR NVL72. As the tables shows, the Orchid board is the main contributor to the delta of total high-end PCB area between GB300 and VR NVL72 rack.
Context After
Our VR NVL72 Component BoM and Power Budget Model ↗ has provides the $ content breakdown of high end CCL and PCB content for VR NVL72 vs GB200/GB300.
Compute Tray: Thermal
② Atomic Claim
In Grace Blackwell, only the Bianca and NVSwitch boards use high-end materials, leaving the front half of the compute tray uncovered by high-end PCB.
- Epistemic Mode:
ASSERTED - Mapping Status:
COMPLETE
③ Semantic Frame
{
"attribute": "HIGH_END_PCB_AREA",
"context_nodes": [
{
"id": "04_knowledge_base/NVIDIA Grace",
"label": "Grace"
},
{
"id": "04_knowledge_base/Bianca Board",
"label": "Bianca"
},
{
"id": "04_knowledge_base/NVSwitch",
"label": "NVSwitch"
},
{
"id": "04_knowledge_base/Compute Tray",
"label": "compute tray"
},
{
"id": "04_knowledge_base/PCB",
"label": "PCB"
}
],
"entity": {
"id": "04_knowledge_base/Blackwell",
"label": "Blackwell"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "In Grace Blackwell, only the Bianca and NVSwitch boards use high-end materials, leaving the front half of the compute tray uncovered by high-end PCB."
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | Blackwell | Blackwell |
| context_0 | Grace | 04_knowledge_base/NVIDIA Grace |
| context_1 | Bianca | 04_knowledge_base/Bianca Board |
| context_2 | NVSwitch | NVSwitch |
| context_3 | compute tray | 04_knowledge_base/Compute Tray |
| context_4 | PCB | PCB |
⑤ V2 Draft（需要修正時直接編輯）
Inline repair
只編輯以下三個 Draft 區塊。完成後將
review_action設為REQUEST_REPAIR，再手動執行 Repair Preview。
執行腳本前，Draft 不會寫入 Claim Store 或 Graph。
V2 Atomic Claim Draft
In Grace Blackwell, only the Bianca and NVSwitch boards use high-end materials, leaving the front half of the compute tray uncovered by high-end PCB.
V2 Semantic Frame Draft
{
"attribute": "HIGH_END_PCB_AREA",
"context_nodes": [
{
"id": "04_knowledge_base/NVIDIA Grace",
"label": "Grace"
},
{
"id": "04_knowledge_base/Bianca Board",
"label": "Bianca"
},
{
"id": "04_knowledge_base/NVSwitch",
"label": "NVSwitch"
},
{
"id": "04_knowledge_base/Compute Tray",
"label": "compute tray"
},
{
"id": "04_knowledge_base/PCB",
"label": "PCB"
}
],
"entity": {
"id": "04_knowledge_base/Blackwell",
"label": "Blackwell"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "In Grace Blackwell, only the Bianca and NVSwitch boards use high-end materials, leaving the front half of the compute tray uncovered by high-end PCB."
}
}V2 Revision Metadata Draft
{
"epistemic_mode": "ASSERTED",
"mapping_status": "COMPLETE"
}⑥ 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。