VR2R-0361_r1

VR2R-0361

① SA Source

• Source: 開啟完整 SA 文章
• Section: PCB Materials Upgrade and Area Growth
• Line hint: 308

Context Before

Beside material upgrade, the other driver of PCB content value is the increase of high end PCB area coverage.

Evidence

In Grace Blackwell, the only boards with high end material are the Bianca board with M7 grade CCL and the NVSwitch board with M8 grade CCL, leaving front half of the compute tray uncovered by high end PCB board.

Context After

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.

② Atomic Claim

在 Grace Blackwell 中，只有 Bianca board 使用 M7 grade CCL、NVSwitch board 使用 M8 grade CCL；因此 compute tray 前半部沒有 high-end PCB board 覆蓋。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "frame_type": "NARY_RELATION",
  "participants": [
    {
      "node": {
        "id": "04_knowledge_base/NVIDIA Grace",
        "label": "Grace"
      },
      "role": "cpu"
    },
    {
      "node": {
        "id": "04_knowledge_base/Blackwell",
        "label": "Blackwell"
      },
      "role": "gpu_generation"
    },
    {
      "node": {
        "id": "04_knowledge_base/Bianca Board",
        "label": "Bianca board"
      },
      "role": "board"
    },
    {
      "node": {
        "id": "04_knowledge_base/Copper-clad laminate",
        "label": "CCL"
      },
      "role": "material"
    },
    {
      "node": {
        "id": "04_knowledge_base/NVSwitch",
        "label": "NVSwitch"
      },
      "role": "board"
    },
    {
      "node": {
        "id": "04_knowledge_base/Compute Tray",
        "label": "compute tray"
      },
      "role": "system_component"
    },
    {
      "node": {
        "id": "04_knowledge_base/PCB",
        "label": "PCB"
      },
      "role": "board_type"
    }
  ],
  "qualifiers": {
    "condition_text": "front half of compute tray is not covered by high-end PCB board",
    "numeric_mentions": [
      "M7",
      "M8"
    ],
    "temporal_mentions": []
  },
  "relation_type": "GRACE_BLACKWELL_HIGH_END_PCB_COVERAGE"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
cpu	Grace	04_knowledge_base/NVIDIA Grace
gpu_generation	Blackwell	Blackwell
board	Bianca board	04_knowledge_base/Bianca Board
material	CCL	04_knowledge_base/Copper-clad laminate
board	NVSwitch	NVSwitch
system_component	compute tray	04_knowledge_base/Compute Tray
board_type	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。