24.1.1. On Linux - 5.2 English - 57404

AOCL User Guide (57404)
Document ID
57404
Release Date
2025-12-29
Version
5.2 English

To identify your AMD processor’s generation, perform the following steps on Linux:

  1. Run the command:

    $ lscpu

  2. Check the values of CPU family and Model fields:

    1. For 1st Gen AMD EPYCTM Processors (codenamed “Naples”), CPU Core AMD “Zen”

      • CPU Family: 23

      • Model: Values in the range <1-47>

    2. For 2nd Gen AMD EPYCTM Processors (codenamed “Rome”), CPU Core AMD “Zen2”

      • CPU Family: 23

      • Model: Values in the range <48-63>

    3. For 3rd Gen AMD EPYCTM Processors (codenamed “Milan”), CPU Core AMD “Zen3”

      • CPU Family: 25

      • Model: Values in the range <1-15>

    4. For 4th Gen AMD EPYCTM Processors (codenamed “Genoa”), CPU Core AMD “Zen4”

      • CPU Family: 25

      • Model: Values in the range <16-31, 96-111, 120-123, 160-175>

    5. For 5th Gen AMD EPYCTM Processors (codenamed “Turin”), CPU Core AMD “Zen5”

      • CPU Family: 26

      • Model: Values in the range <0-15, 16-31>