Windows 11 officially requires an 8th-generation Intel Core CPU or AMD Ryzen 2000 series or newer, alongside TPM 2.0 and Secure Boot support. Older CPUs can still install Windows 11 unofficially with a workaround, but Microsoft doesn’t guarantee updates or support on unsupported hardware.
- Officially, you need 8th-gen Intel or Ryzen 2000 or newer.
- TPM 2.0 and Secure Boot are also required, not just the CPU.
- Older CPUs can install it unofficially, but without full support.
- Check your exact model against Microsoft’s supported CPU list.
The Official Requirement
Microsoft’s minimum supported CPUs are 8th-generation Intel Core processors and AMD Ryzen 2000 series and newer, alongside a handful of specific older exceptions. Beyond the CPU, the system also needs TPM 2.0, UEFI with Secure Boot, and at least 4GB of RAM, per Microsoft’s official specifications page.
How to Check Your CPU
Find your exact model using what CPU do I have, then check it against Microsoft’s supported Intel processors list or the AMD list.
Installing on an Unsupported CPU
Microsoft allows installing Windows 11 on unsupported hardware through a registry bypass during setup, but it comes with tradeoffs: a watermark, a warning that the PC doesn’t meet requirements, and no guarantee of receiving future updates, including some security patches. This isn’t officially recommended for a primary, security-sensitive PC.
What to Do If Your CPU Isn’t Supported
Check what CPU do I have first to confirm your exact model before deciding what to do next.
- Stay on Windows 10 as long as it receives support, and reassess later
- Use the unofficial installation method, accepting the update risk
- Consider upgrading the CPU if your motherboard supports a compatible chip
Note: TPM 2.0 support catches out some builders even on a supported CPU, since it must also be enabled in the BIOS. Check your board’s manual for the setting, often called PTT on Intel or fTPM on AMD.
Frequently Asked Questions
Can I install Windows 11 on an unsupported CPU?
Yes, using a registry bypass during setup, but Microsoft doesn’t guarantee full update support on unsupported hardware.
Do I need TPM 2.0 even with a supported CPU?
Yes. It’s a separate requirement from the CPU and often needs enabling manually in the BIOS on older boards.
Will an unsupported CPU still get security updates?
Not guaranteed. Microsoft has stated some unsupported systems may not receive all updates, including some security patches.
What is the oldest CPU that officially supports Windows 11?
Generally 8th-generation Intel Core or AMD Ryzen 2000 series, with a small number of specific older exceptions listed by Microsoft.
Frequently Asked Questions
Can I install Windows 11 on an unsupported CPU?
Yes, using a registry bypass during setup, but Microsoft doesn’t guarantee full update support on unsupported hardware.
Do I need TPM 2.0 even with a supported CPU?
Yes. It’s a separate requirement from the CPU and often needs enabling manually in the BIOS on older boards.
Will an unsupported CPU still get security updates?
Not guaranteed. Microsoft has stated some unsupported systems may not receive all updates, including some security patches.
What is the oldest CPU that officially supports Windows 11?
Generally 8th-generation Intel Core or AMD Ryzen 2000 series, with a small number of specific older exceptions listed by Microsoft.
