VR2R-0737
① SA Source
- Source: 開啟完整 SA 文章
- Section:
VR NVL72 TCO: BoM and Power Budget Analysis - Line hint:
987
Context Before
Given that total cost of ownership is only 1.75x higher, this results in a superior performance-per-TCO profile for B300 despite the more modest marketed figures. Such a wildly different result despite very similar specs underscores that real world performance is not dictated by peak FLOPS or memory bandwidth alone. Software and network capabilities are also major factors that contribute to training and token throughput in real workloads.
Rubin and MI4XX will ship with new microarchitectures, real world performance is especially difficult to predict without and benchmarking like we do with InferenceX.
Evidence
Notably, both operating modes share identical memory bandwidth specifications at 8TB/s. Yet, despite the parity in memory bandwidth inference performance still diverges materially.
Context After
Source: SemiAnalysis InferenceX ↗
② Atomic Claim
The February article states that “both operating modes” have 8TB/s memory bandwidth, but does not resolve the antecedent; the preceding paragraph compares B300 and MI355.
- Epistemic Mode:
ATTRIBUTED - Mapping Status:
CLAIM_ONLY
③ Semantic Frame
{
"frame_type": "CLAIM_ONLY",
"qualifiers": {
"condition_text": "Source-local ambiguity; do not project a Rubin power-profile bandwidth attribute.",
"numeric_mentions": [
"8TB/s"
],
"temporal_mentions": []
},
"reason": "SOURCE_ANTECEDENT_AMBIGUOUS",
"statement": "The February article states that “both operating modes” have 8TB/s memory bandwidth, but does not resolve the antecedent; the preceding paragraph compares B300 and MI355."
}④ Canonical Entity Mapping
- 此
CLAIM_ONLYrevision 沒有 canonical Entity mapping。
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
The February article states that “both operating modes” have 8TB/s memory bandwidth, but does not resolve the antecedent; the preceding paragraph compares B300 and MI355.
V2 Semantic Frame Draft
{
"frame_type": "CLAIM_ONLY",
"qualifiers": {
"condition_text": "Source-local ambiguity; do not project a Rubin power-profile bandwidth attribute.",
"numeric_mentions": [
"8TB/s"
],
"temporal_mentions": []
},
"reason": "SOURCE_ANTECEDENT_AMBIGUOUS",
"statement": "The February article states that “both operating modes” have 8TB/s memory bandwidth, but does not resolve the antecedent; the preceding paragraph compares B300 and MI355."
}V2 Revision Metadata Draft
{
"epistemic_mode": "ATTRIBUTED",
"mapping_status": "CLAIM_ONLY"
}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。