| AMD CPU Series | POPCNT | MBEC | TPM 2.0 | Win11 23H2 | Win11 24H2 | Official support | |----------------|--------|------|---------|------------|------------|------------------| | Ryzen 1000 (Zen 1) | Yes | No | fTPM | Works (bypass) | Works (bypass) | ❌ No | | Ryzen 2000+ (Zen+) | Yes | Yes | fTPM | Works | Works | ✅ Yes | | FX / A-Series (Bulldozer+) | Yes | No | Optional | Works (bypass) | Works (bypass) | ❌ No | | Phenom II / Athlon II | No | No | No | No (23H2 may work if bypass) | ❌ BSOD | ❌ No | | Athlon 64 X2 | No | No | No | ❌ No | ❌ BSOD | ❌ No |
: Windows 11 24H2 now requires POPCNT (Population Count instruction). CPUs without POPCNT will not boot at all (BSOD: UNSUPPORTED_PROCESSOR). This kills many older AMD CPUs (pre-Barcelona, 2007). Ryzen 1000 and later have POPCNT. windows 11 cpu compatibility list amd
The following popular AMD CPUs are officially supported by Microsoft for Windows 11, though they are still widely used: | AMD CPU Series | POPCNT | MBEC | TPM 2
Microsoft cites security reasons (lack of TPM 2.0 support and newer Virtualization-Based Security features) and driver stability for older architectures. Ryzen 1000 and later have POPCNT
In conclusion, Windows 11 has specific CPU requirements, and AMD processors must meet these requirements to be compatible. The list of compatible AMD CPUs includes Ryzen 5000, 4000, and 3000 series processors, EPYC 7000 series processors, and Threadripper 3000 series processors. If you're unsure about your CPU compatibility, you can check the CPU specifications on the AMD website or use a third-party system information tool.
Microsoft requires for Windows 11 version 22H2, 23H2, and 24H2. Older Ryzen 1000 (Zen 1) and certain Athlon/Opteron chips are officially unsupported .