Each Windows operating system has supported CPU.
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These are the supported Intel CPU for Windows 11:
https://learn.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors
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Most computers that run Windows 10 can run Windows 11 in a supported or unsupported fashion.
This includes desktops, laptops, and tablets.
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When upgrading in the unsupported fashion the computer user may not benefit from the improvements in performance, reliability, and security.
https://blogs.windows.com/windows-insider/2021/08/27/update-on-windows-11-minimum-system-requirements-and-the-pc-health-check-app/
https://support.microsoft.com/en-us/windows/installing-windows-11-on-devices-that-don-t-meet-minimum-system-requirements-0b2dc4a2-5933-4ad4-9c09-ef0a331518f1
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If you choose to upgrade in an unsupported fashion make sure that you make free backup images so that you can always return to Windows 10.
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There is a default 10 day go back period that can be modified to 60 days.
However the go back feature could fail.
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These are links on how to upgrade in an unsupported fashion:
https://www.elevenforum.com/t/bypass-windows-11-tpm-2-0-and-cpu-system-requirements.1989/
https://www.elevenforum.com/t/lets-install-windows-11-on-incompatible-hardware.133/
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