VR2R-0329
① SA Source
- Source: 開啟完整 SA 文章
- Section:
PCB Materials Upgrade and Area Growth - Line hint:
292
Context Before
PCB content value in VR NVL72 will grow significantly compared to that of GB200/GB300. The two main drivers of this content growth are significant material upgrades and
Evidence
the notable increase of high-end PCB area and layers.
Context After
On the material side, CCL content upgrades from M7 to M8/M9 drives material upgrades. Copper foil is upgraded to HVLP4 across the board for the main compute and networking boards. A glass fiber cloth upgrade is necessary to reduce dielectric loss, but whether quartz cloth (Q glass) is necessary remains a debate. Below let’s discuss the materials upgrade and the key considerations behind the adoption of each material.
② Atomic Claim
……另一個驅動因素是 high-end PCB area 與 layers 明顯增加。
- Epistemic Mode:
ASSERTED - Mapping Status:
PARTIAL
③ Semantic Frame
{
"attribute": "CONTENT_GROWTH_DRIVER_AREA_AND_LAYERS",
"context_nodes": [],
"entity": {
"id": "04_knowledge_base/PCB",
"label": "PCB"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": "second driver continuing VR2R-0328",
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "high-end PCB area and layer count increase notably."
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | PCB | PCB |
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。