GB2-0020
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Compute Tray Diagrams & Cabling - Line hint:
197
Context Before
Source: SemiAnalysis
Evidence
For the GB200, the CPU and GPU are both on the same PCB, reducing insertion loss to a point that there is no longer any need for switches or retimers between the CPU and GPU on the reference design.
Context After
Another interesting thing about the reference design is that instead of using the typical MCIO PCIe x16 connectors to connect the main PCB board to a PCIe form factor ConnectX-7/8, the ConnectX-7/8 ICs now sit directly on top of the Bianca board using a mezzanine board via Mirror Mezz connectors.
② Atomic Claim
在 GB200 reference design 中，CPU 與 GPU 位於同一張 PCB，降低 insertion loss，因此 CPU 與 GPU 間不再需要 switches 或 retimers。
- Epistemic Mode:
ASSERTED - Mapping Status:
COMPLETE
③ Semantic Frame
{
"frame_type": "NARY_RELATION",
"participants": [
{
"node": {
"id": "04_knowledge_base/GB200",
"label": "GB200"
},
"role": "system"
},
{
"node": {
"id": "04_knowledge_base/CPU",
"label": "CPU"
},
"role": "cpu"
},
{
"node": {
"id": "04_knowledge_base/GPU",
"label": "GPU"
},
"role": "gpu"
},
{
"node": {
"id": "04_knowledge_base/PCB",
"label": "PCB"
},
"role": "board"
},
{
"node": {
"id": "04_knowledge_base/Insertion loss",
"label": "insertion loss"
},
"role": "effect"
},
{
"node": {
"id": "04_knowledge_base/Reference Design",
"label": "reference design"
},
"role": "design"
}
],
"qualifiers": {
"condition_text": "CPU and GPU on the same PCB eliminate the need for switches or retimers between them",
"numeric_mentions": [],
"temporal_mentions": []
},
"relation_type": "SAME_PCB_CPU_GPU_INTEGRATION"
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| system | GB200 | GB200 |
| cpu | CPU | CPU |
| gpu | GPU | GPU |
| board | PCB | PCB |
| effect | insertion loss | 04_knowledge_base/Insertion loss |
| design | 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。