SA260324R-0374_r1

SA260324R-0374

① SA Source

• Source: 開啟完整 SA 文章
• Section: Mid-board Optics - Nvidia's War on Pluggables
• Line hint: 466

Context Before

Interestingly, the Kyber rack exhibited at the GTC 2026 show floor is missing OSFP cages for scale-out networking. Instead, we only see 4x MPO ports from each compute tray. This design has effectively taken key pluggable transceiver items (driver, TIA, etc.) other than the DSP and put them on a Midboard Optical Module (MBOM) which then connects to the PCB via a land grid array (LGA) socket.

Evidence

Two CX-9s share one MBOM, which then connects to the MPO faceplate via a short fiber connection.

Context After

The MBOM provides two MPO ports at 2x800G each for 1.6T of total connectivity.

② Atomic Claim

兩顆 CX-9 共用一個 MBOM，MBOM 再透過短距離 fiber 連到 MPO faceplate。

• Epistemic Mode: ASSERTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "frame_type": "NARY_RELATION",
  "participants": [
    {
      "node": {
        "id": "04_knowledge_base/ConnectX-9",
        "label": "CX-9"
      },
      "role": "nic"
    },
    {
      "node": {
        "id": "04_knowledge_base/光模塊",
        "label": "MBOM"
      },
      "role": "optical_module"
    },
    {
      "node": {
        "id": "04_knowledge_base/MPO",
        "label": "MPO"
      },
      "role": "port"
    },
    {
      "node": {
        "id": "04_knowledge_base/光纖",
        "label": "fiber"
      },
      "role": "link"
    }
  ],
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "2",
      "1"
    ],
    "temporal_mentions": []
  },
  "relation_type": "CX9_SHARED_MBOM_TO_MPO_FIBER_PATH"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
nic	CX-9	ConnectX-9
optical_module	MBOM	04_knowledge_base/光模塊
port	MPO	MPO
link	fiber	04_knowledge_base/光纖

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。