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AMD · CPU

AMD EPYC 7643

AMD EPYC 7643 — 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.

Evidence review in progress · Search indexing deferred

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Power

ParameterValue and conditions
TDP
225 W
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Default TDP",
  "raw_value": "225W",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "Default TDP",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
225 W
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Default TDP",
  "raw_value": "225W",
  "qualifiers": {
    "source_field": "Default TDP",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}

Compute

ParameterValue and conditions
Base clock
2,300 MHz
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Base Clock",
  "raw_value": "2.3 GHz",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "Base Clock",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
2,300 MHz
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Base Clock",
  "raw_value": "2.3 GHz",
  "qualifiers": {
    "source_field": "Base Clock",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}
Max boost clock
3,600 MHz
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Max. Boost Clock",
  "raw_value": "Up to 3.6 GHz",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "Max. Boost Clock",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
3,600 MHz
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Max. Boost Clock",
  "raw_value": "Up to 3.6 GHz",
  "qualifiers": {
    "source_field": "Max. Boost Clock",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}
CPU cores
48
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "# of CPU Cores",
  "raw_value": "48",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "# of CPU Cores",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
48
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "# of CPU Cores",
  "raw_value": "48",
  "qualifiers": {
    "source_field": "# of CPU Cores",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}
threads
96
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "# of Threads",
  "raw_value": "96",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "# of Threads",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
96
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "# of Threads",
  "raw_value": "96",
  "qualifiers": {
    "source_field": "# of Threads",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}

Memory

ParameterValue and conditions
L3 cache
256 MB
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "L3 Cache",
  "raw_value": "256 MB",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "L3 Cache",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
256 MB
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "L3 Cache",
  "raw_value": "256 MB",
  "qualifiers": {
    "source_field": "L3 Cache",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}
Max supported memory (TB)
4 TB
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Max. Memory",
  "raw_value": "4 TB",
  "qualifiers": {
    "capacity_scope": "per-socket",
    "evidence_checked_at": "2026-10-10T11:39:41.230525+00:00",
    "evidence_type": "manufacturer-specification",
    "family": "EPYC 7003 Series",
    "identity_match": "exact manufacturer Series observation plus existing catalogID; Embeddedexcluded",
    "memory_population": "controller supports up to2DPC and16DIMMs per socket; board slot count varies",
    "memory_type": "DDR4",
    "not_board_slot_count": true,
    "not_installed_ram": true,
    "source_field": "Max. Memory",
    "source_revision": "57075 rev3.0; portal document70619 release2022-03-21",
    "source_row": 11,
    "source_section": "Table1-1 printed page1; Memory and I/O printed page6",
    "source_sha256": "03f12b48fd55da07400c0d4140a075e17cb133f5fd8702781949cfd1d35f652d"
  },
  "document_id": "reaudit-epyc-7003-architecture-03f12b48fd55da07"
}
Memory channels
8
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Memory Channels",
  "raw_value": "8",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "Memory Channels",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
8
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "Memory Channels",
  "raw_value": "8",
  "qualifiers": {
    "source_field": "Memory Channels",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}
Memory type
DDR4
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "System Memory Type",
  "raw_value": "DDR4",
  "qualifiers": {
    "release_evidence": "dated-manufacturer-listing",
    "source_field": "System Memory Type",
    "source_product_url": "https://www.amd.com/en/products/processors/server/epyc/7003-series/amd-epyc-7643.html",
    "source_row": 118
  },
  "document_id": "amd-server-table-ba5dc2e1f3f72b71"
}
DDR4
Source and conditions

View source ↗

{
  "state": "known",
  "raw_label": "System Memory Type",
  "raw_value": "DDR4",
  "qualifiers": {
    "source_field": "System Memory Type",
    "source_row": 1
  },
  "document_id": "detail-38d6d8464490d97e-b54e9944414d8d40"
}

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.

Blender (4)

Blender scene rendering

Too few submissions · No representative score

Run count: 5

Too few submissions · Individual results onlyn = 5

4.3.0 · classroom · CPU · Linux · Rocky Linux · 9.3 · 2P · 96 cores · 96 threads

Counts represent submissions; the number of independent systems is unknown. Stock or overclocked status, RAM and power settings are also unknown.

Measurement scope and interpretation

Sample thresholds are an initial display policy, not a guarantee of statistical confidence. P95 is not a theoretical limit. OS submission shares do not represent user market share.

Observed minimum / maximum
60.45 / 337.46
Measurement dates
2024-12-09 – 2024-12-10
Duplicate submissions removed
0
Quantile calculation
linear interpolation · (n−1) × p

View source ↗

{
  "analysis": {
    "duplicates_removed": 0,
    "independent_system_count": null,
    "individual_results": [
      {
        "measured_at": "2024-12-09T17:28:28.675610+00:00",
        "score": 330.5602124664219,
        "source_record_id": "ab803362-e8cf-4e82-9165-26b92b3b9630"
      },
      {
        "measured_at": "2024-12-09T14:23:13.123251+00:00",
        "score": 60.45011337601946,
        "source_record_id": "afc86ac3-c00d-423b-bc08-329720495afc"
      },
      {
        "measured_at": "2024-12-09T14:29:41.359943+00:00",
        "score": 219.59743569545768,
        "source_record_id": "4cb0247d-1e38-470c-8df9-54033c03c9a2"
      },
      {
        "measured_at": "2024-12-10T08:23:20.262074+00:00",
        "score": 337.4639136934056,
        "source_record_id": "b677a7b8-965c-4605-abe1-2579f2e5d755"
      },
      {
        "measured_at": "2024-12-10T08:26:06.238299+00:00",
        "score": 334.9322107444998,
        "source_record_id": "f8d9d023-a003-4767-b8da-17aa776ba4c3"
      }
    ],
    "median": null,
    "observed_max": 337.4639136934056,
    "observed_min": 60.45011337601946,
    "policy": "submitted-runs-v1",
    "quantile_method": "linear interpolation at (n-1)*p",
    "sample_count": 5,
    "sample_status": "individual",
    "settings_status": "unknown"
  },
  "comparison_readiness": "observational-only",
  "condition": {
    "benchmark": "Blender",
    "environment": {
      "backend": "CPU",
      "benchmark_script": "3.1.1",
      "device_name": "AMD EPYC 7643 48-Core Processor",
      "dist_name": "Rocky Linux",
      "dist_version": "9.3",
      "driver": null,
      "num_cpu_cores": 96,
      "num_cpu_sockets": 2,
      "num_cpu_threads": 96,
      "power_limit": null,
      "ram_bytes": null,
      "settings_status": "unknown",
      "system": "Linux"
    },
    "scene": "classroom",
    "scene_checksum": "936f0a528f03eba291c67ea87743a0ebde58938fb87471b262721b89b46b875d",
    "version": "4.3.0"
  },
  "condition_id": "e30d5e79ded79073fe68",
  "document_id": "blender-open-data-3b13b06e2e84b715",
  "example_record_ids": [
    "ab803362-e8cf-4e82-9165-26b92b3b9630",
    "afc86ac3-c00d-423b-bc08-329720495afc",
    "4cb0247d-1e38-470c-8df9-54033c03c9a2"
  ],
  "measured_from": "2024-12-09T14:23:13.123251+00:00",
  "measured_to": "2024-12-10T08:26:06.238299+00:00",
  "median": null,
  "parameter_id": "benchmark.blender.samples_per_minute",
  "population": "public submitted runs; not independent systems",
  "product_id": "amd-epyc-7643",
  "run_count": 5,
  "sample_status": "individual"
}

Blender scene rendering

Too few submissions · No representative score

Run count: 5

Too few submissions · Individual results onlyn = 5

4.3.0 · junkshop · CPU · Linux · Rocky Linux · 9.3 · 2P · 96 cores · 96 threads

Counts represent submissions; the number of independent systems is unknown. Stock or overclocked status, RAM and power settings are also unknown.

Measurement scope and interpretation

Sample thresholds are an initial display policy, not a guarantee of statistical confidence. P95 is not a theoretical limit. OS submission shares do not represent user market share.

Observed minimum / maximum
73.24 / 442.27
Measurement dates
2024-12-09 – 2024-12-10
Duplicate submissions removed
0
Quantile calculation
linear interpolation · (n−1) × p

View source ↗

{
  "analysis": {
    "duplicates_removed": 0,
    "independent_system_count": null,
    "individual_results": [
      {
        "measured_at": "2024-12-09T17:27:54.910622+00:00",
        "score": 440.6988366846885,
        "source_record_id": "ab803362-e8cf-4e82-9165-26b92b3b9630"
      },
      {
        "measured_at": "2024-12-09T14:22:36.887392+00:00",
        "score": 73.23791312987203,
        "source_record_id": "afc86ac3-c00d-423b-bc08-329720495afc"
      },
      {
        "measured_at": "2024-12-09T14:29:06.733103+00:00",
        "score": 282.56885358503223,
        "source_record_id": "4cb0247d-1e38-470c-8df9-54033c03c9a2"
      },
      {
        "measured_at": "2024-12-10T08:22:47.303131+00:00",
        "score": 440.19932065891265,
        "source_record_id": "b677a7b8-965c-4605-abe1-2579f2e5d755"
      },
      {
        "measured_at": "2024-12-10T08:25:33.425460+00:00",
        "score": 442.26606640226544,
        "source_record_id": "f8d9d023-a003-4767-b8da-17aa776ba4c3"
      }
    ],
    "median": null,
    "observed_max": 442.26606640226544,
    "observed_min": 73.23791312987203,
    "policy": "submitted-runs-v1",
    "quantile_method": "linear interpolation at (n-1)*p",
    "sample_count": 5,
    "sample_status": "individual",
    "settings_status": "unknown"
  },
  "comparison_readiness": "observational-only",
  "condition": {
    "benchmark": "Blender",
    "environment": {
      "backend": "CPU",
      "benchmark_script": "3.1.1",
      "device_name": "AMD EPYC 7643 48-Core Processor",
      "dist_name": "Rocky Linux",
      "dist_version": "9.3",
      "driver": null,
      "num_cpu_cores": 96,
      "num_cpu_sockets": 2,
      "num_cpu_threads": 96,
      "power_limit": null,
      "ram_bytes": null,
      "settings_status": "unknown",
      "system": "Linux"
    },
    "scene": "junkshop",
    "scene_checksum": "f5515a21a1337b908212d8d76733530df83014464a24c585ab7b96000da0cdce",
    "version": "4.3.0"
  },
  "condition_id": "cfa47d6e8ae1be3014fc",
  "document_id": "blender-open-data-3b13b06e2e84b715",
  "example_record_ids": [
    "ab803362-e8cf-4e82-9165-26b92b3b9630",
    "afc86ac3-c00d-423b-bc08-329720495afc",
    "4cb0247d-1e38-470c-8df9-54033c03c9a2"
  ],
  "measured_from": "2024-12-09T14:22:36.887392+00:00",
  "measured_to": "2024-12-10T08:25:33.425460+00:00",
  "median": null,
  "parameter_id": "benchmark.blender.samples_per_minute",
  "population": "public submitted runs; not independent systems",
  "product_id": "amd-epyc-7643",
  "run_count": 5,
  "sample_status": "individual"
}

Blender scene rendering

Too few submissions · No representative score

Run count: 5

Too few submissions · Individual results onlyn = 5

4.3.0 · monster · CPU · Linux · Rocky Linux · 9.3 · 2P · 96 cores · 96 threads

Counts represent submissions; the number of independent systems is unknown. Stock or overclocked status, RAM and power settings are also unknown.

Measurement scope and interpretation

Sample thresholds are an initial display policy, not a guarantee of statistical confidence. P95 is not a theoretical limit. OS submission shares do not represent user market share.

Observed minimum / maximum
119.14 / 697.39
Measurement dates
2024-12-09 – 2024-12-10
Duplicate submissions removed
0
Quantile calculation
linear interpolation · (n−1) × p

View source ↗

{
  "analysis": {
    "duplicates_removed": 0,
    "independent_system_count": null,
    "individual_results": [
      {
        "measured_at": "2024-12-09T17:27:14.845386+00:00",
        "score": 689.6354469430663,
        "source_record_id": "ab803362-e8cf-4e82-9165-26b92b3b9630"
      },
      {
        "measured_at": "2024-12-09T14:21:55.588798+00:00",
        "score": 119.14322093555349,
        "source_record_id": "afc86ac3-c00d-423b-bc08-329720495afc"
      },
      {
        "measured_at": "2024-12-09T14:28:26.743640+00:00",
        "score": 437.8174069727447,
        "source_record_id": "4cb0247d-1e38-470c-8df9-54033c03c9a2"
      },
      {
        "measured_at": "2024-12-10T08:22:11.317388+00:00",
        "score": 690.7962414961103,
        "source_record_id": "b677a7b8-965c-4605-abe1-2579f2e5d755"
      },
      {
        "measured_at": "2024-12-10T08:24:57.206495+00:00",
        "score": 697.3934918243067,
        "source_record_id": "f8d9d023-a003-4767-b8da-17aa776ba4c3"
      }
    ],
    "median": null,
    "observed_max": 697.3934918243067,
    "observed_min": 119.14322093555349,
    "policy": "submitted-runs-v1",
    "quantile_method": "linear interpolation at (n-1)*p",
    "sample_count": 5,
    "sample_status": "individual",
    "settings_status": "unknown"
  },
  "comparison_readiness": "observational-only",
  "condition": {
    "benchmark": "Blender",
    "environment": {
      "backend": "CPU",
      "benchmark_script": "3.1.1",
      "device_name": "AMD EPYC 7643 48-Core Processor",
      "dist_name": "Rocky Linux",
      "dist_version": "9.3",
      "driver": null,
      "num_cpu_cores": 96,
      "num_cpu_sockets": 2,
      "num_cpu_threads": 96,
      "power_limit": null,
      "ram_bytes": null,
      "settings_status": "unknown",
      "system": "Linux"
    },
    "scene": "monster",
    "scene_checksum": "8ff812a02f720433de1403dab447be9541eecca71cc919224a7790d017c1b2ce",
    "version": "4.3.0"
  },
  "condition_id": "fac34e28154c0340054d",
  "document_id": "blender-open-data-3b13b06e2e84b715",
  "example_record_ids": [
    "ab803362-e8cf-4e82-9165-26b92b3b9630",
    "afc86ac3-c00d-423b-bc08-329720495afc",
    "4cb0247d-1e38-470c-8df9-54033c03c9a2"
  ],
  "measured_from": "2024-12-09T14:21:55.588798+00:00",
  "measured_to": "2024-12-10T08:24:57.206495+00:00",
  "median": null,
  "parameter_id": "benchmark.blender.samples_per_minute",
  "population": "public submitted runs; not independent systems",
  "product_id": "amd-epyc-7643",
  "run_count": 5,
  "sample_status": "individual"
}

Blender complete benchmark

Too few submissions · No representative score

Run count: 5

Too few submissions · Individual results onlyn = 5

4.3.0 · monster + junkshop + classroom · CPU · Linux · Rocky Linux · 9.3 · 2P · 96 cores · 96 threads

Counts represent submissions; the number of independent systems is unknown. Stock or overclocked status, RAM and power settings are also unknown.

Measurement scope and interpretation

Sample thresholds are an initial display policy, not a guarantee of statistical confidence. P95 is not a theoretical limit. OS submission shares do not represent user market share.

Observed minimum / maximum
252.83 / 1,474.59
Measurement dates
2024-12-09 – 2024-12-10
Duplicate submissions removed
0
Quantile calculation
linear interpolation · (n−1) × p

View source ↗

{
  "analysis": {
    "duplicates_removed": 0,
    "independent_system_count": null,
    "individual_results": [
      {
        "measured_at": "2024-12-09T17:28:28.675610+00:00",
        "score": 1460.8944960941767,
        "source_record_id": "ab803362-e8cf-4e82-9165-26b92b3b9630"
      },
      {
        "measured_at": "2024-12-09T14:23:13.123251+00:00",
        "score": 252.831247441445,
        "source_record_id": "afc86ac3-c00d-423b-bc08-329720495afc"
      },
      {
        "measured_at": "2024-12-09T14:29:41.359943+00:00",
        "score": 939.9836962532346,
        "source_record_id": "4cb0247d-1e38-470c-8df9-54033c03c9a2"
      },
      {
        "measured_at": "2024-12-10T08:23:20.262074+00:00",
        "score": 1468.4594758484286,
        "source_record_id": "b677a7b8-965c-4605-abe1-2579f2e5d755"
      },
      {
        "measured_at": "2024-12-10T08:26:06.238299+00:00",
        "score": 1474.5917689710718,
        "source_record_id": "f8d9d023-a003-4767-b8da-17aa776ba4c3"
      }
    ],
    "median": null,
    "observed_max": 1474.5917689710718,
    "observed_min": 252.831247441445,
    "policy": "submitted-runs-v1",
    "quantile_method": "linear interpolation at (n-1)*p",
    "sample_count": 5,
    "sample_status": "individual",
    "settings_status": "unknown"
  },
  "comparison_readiness": "observational-only",
  "condition": {
    "benchmark": "Blender",
    "environment": {
      "backend": "CPU",
      "benchmark_script": "3.1.1",
      "device_name": "AMD EPYC 7643 48-Core Processor",
      "dist_name": "Rocky Linux",
      "dist_version": "9.3",
      "driver": null,
      "num_cpu_cores": 96,
      "num_cpu_sockets": 2,
      "num_cpu_threads": 96,
      "power_limit": null,
      "ram_bytes": null,
      "settings_status": "unknown",
      "system": "Linux"
    },
    "scene": "monster + junkshop + classroom",
    "scene_checksum": "c3453da9769193d968fb1cc675fd7f92a3424abe9ac730218f2e00b953389356",
    "version": "4.3.0"
  },
  "condition_id": "5aaf91ccd3ed71a0f59e",
  "document_id": "blender-open-data-3b13b06e2e84b715",
  "example_record_ids": [
    "ab803362-e8cf-4e82-9165-26b92b3b9630",
    "afc86ac3-c00d-423b-bc08-329720495afc",
    "4cb0247d-1e38-470c-8df9-54033c03c9a2"
  ],
  "measured_from": "2024-12-09T14:23:13.123251+00:00",
  "measured_to": "2024-12-10T08:26:06.238299+00:00",
  "median": null,
  "parameter_id": "benchmark.blender.total_samples_per_minute",
  "population": "public submitted runs; not independent systems",
  "product_id": "amd-epyc-7643",
  "run_count": 5,
  "sample_status": "individual"
}

Sources

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