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AMD · GPU

AMD Instinct MI455X

AMD Instinct MI455X — Specifications and benchmarks. .

These specifications are supported by the linked sources. Core counts, clocks and memory capacities do not predict workload performance. Check benchmark versions, environments and sample counts.

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Compute

ParameterValue and conditions
Published process node
TSMC 2nm | 3nm FinFET
Source and conditions

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{
  "state": "known",
  "raw_label": "Lithography",
  "raw_value": "TSMC 2nm | 3nm FinFET",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "Lithography",
    "source_product_url": "https://www.amd.com/en/products/accelerators/instinct/mi400/mi455x.html",
    "source_row": 1
  },
  "document_id": "amd-accelerators-table-476d280fcef32458"
}
TSMC 2nm | 3nm FinFET
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Lithography",
  "raw_value": "TSMC 2nm | 3nm FinFET",
  "qualifiers": {
    "source_field": "Lithography",
    "source_row": 1
  },
  "document_id": "detail-78507b9553ace7e1-a1dd7fbd1983d7af"
}
Architecture
CDNA5
Source and conditions

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{
  "state": "known",
  "raw_label": "GPU Architecture",
  "raw_value": "CDNA5",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "GPU Architecture",
    "source_product_url": "https://www.amd.com/en/products/accelerators/instinct/mi400/mi455x.html",
    "source_row": 1
  },
  "document_id": "amd-accelerators-table-476d280fcef32458"
}
CDNA5
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "GPU Architecture",
  "raw_value": "CDNA5",
  "qualifiers": {
    "source_field": "GPU Architecture",
    "source_row": 1
  },
  "document_id": "detail-78507b9553ace7e1-a1dd7fbd1983d7af"
}

Memory

ParameterValue and conditions
GPU L2 cache (documented MB)
192 MB
Source and conditions

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{
  "state": "known",
  "raw_label": "L2 Cache",
  "raw_value": "192 MB",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "L2 Cache",
    "source_product_url": "https://www.amd.com/en/products/accelerators/instinct/mi400/mi455x.html",
    "source_row": 1
  },
  "document_id": "amd-accelerators-table-476d280fcef32458"
}
192 MB
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "L2 Cache",
  "raw_value": "192 MB",
  "qualifiers": {
    "source_field": "L2 Cache",
    "source_row": 1
  },
  "document_id": "detail-78507b9553ace7e1-a1dd7fbd1983d7af"
}
Graphics memory type
HBM4
Source and conditions

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{
  "state": "known",
  "raw_label": "Dedicated Memory Type",
  "raw_value": "HBM4",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "Dedicated Memory Type",
    "source_product_url": "https://www.amd.com/en/products/accelerators/instinct/mi400/mi455x.html",
    "source_row": 1
  },
  "document_id": "amd-accelerators-table-476d280fcef32458"
}
HBM4
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Dedicated Memory Type",
  "raw_value": "HBM4",
  "qualifiers": {
    "source_field": "Dedicated Memory Type",
    "source_row": 1
  },
  "document_id": "detail-78507b9553ace7e1-a1dd7fbd1983d7af"
}
Dedicated VRAM
432 GB
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Dedicated Memory Size",
  "raw_value": "432 GB",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "Dedicated Memory Size",
    "source_product_url": "https://www.amd.com/en/products/accelerators/instinct/mi400/mi455x.html",
    "source_row": 1
  },
  "document_id": "amd-accelerators-table-476d280fcef32458"
}
432 GB
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Dedicated Memory Size",
  "raw_value": "432 GB",
  "qualifiers": {
    "source_field": "Dedicated Memory Size",
    "source_row": 1
  },
  "document_id": "detail-78507b9553ace7e1-a1dd7fbd1983d7af"
}

Public benchmarks

Compare results with matching versions, scenes, settings and statistics. A run count of 0 identifies an aggregate or reported value, not a newly measured run.

No comparable public scores are available. This does not mean a score of zero or poor performance.

Sources

Source terms and retrieval dates are listed below. Published values and conditions may change.