clm_8e71e2e5b7c5478cac3d5ffc057864d7_r1

2025-06-13_amd-advancing-ai-mi350x-and-mi400-ualoe72-mi500-ual256::AMD25-0010

① SA Source

• Source: 開啟完整 SA 文章
• Section: Executive Summary
• Line hint: 73

Context Before

Despite these earlier points, the MI400 Series with UALink over Ethernet will still be competitive with the VR200 NVL144’s NVLink in terms of scale up bandwidth and also has a scale up world size of 72 logical GPUs

Evidence

In late 2027, AMD will release the MI500 UAL256 which will feature 256 physical/logical chips and not just 144 physical/logical chips like in VR300 NVL576

Context After

MI350X and MI355X Specs

There are two versions of the CDNA4 chips in this series – namely the MI350X and the MI355X. The MI350X is the 1,000W version that is air cooled while the MI355X is a 1,400W version that supports both air cooling and DLC liquid cooling. Even though the MI355X uses 1.4x more power, the on-paper specs show that it is less than 10% faster than the MI350X in terms of TFLOPS throughput. However, we expect realized performance to be greater than 10% better for the MI355X because published specs are often never achieved due to power limitations. These published specs assume that the peak clock speed can be held in real workloads, but that’s simply not the case on both AMD and Nvidia systems.

② Atomic Claim

SemiAnalysis 預期 late-2027 AMD MI500 UAL256 將有 256 physical/logical chips，對比 VR300 NVL576 的 144 physical/logical chips。

• Epistemic Mode: EXPECTED
• Mapping Status: COMPLETE

③ Semantic Frame

{
  "comparison_expression": "MI500 UAL256: 256; VR300 NVL576: 144",
  "entities": [
    {
      "id": "04_knowledge_base/AMD MI500 Series",
      "label": "MI500"
    },
    {
      "id": "04_knowledge_base/UAL256",
      "label": "UAL256"
    },
    {
      "id": "04_knowledge_base/VR300",
      "label": "VR300"
    },
    {
      "id": "04_knowledge_base/NVL576",
      "label": "NVL576"
    }
  ],
  "frame_type": "COMPARISON",
  "metric": "physical_logical_chip_count",
  "operator": "256_VS_144",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [
      "2027",
      "256",
      "144"
    ],
    "temporal_mentions": []
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
comparison_entity_0	MI500	04_knowledge_base/AMD MI500 Series
comparison_entity_1	UAL256	UAL256
comparison_entity_2	VR300	VR300
comparison_entity_3	NVL576	NVL576

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。