On which computers will we install Windows 11? Hardware requirements

 If your processor is older than an 8th-generation Intel Core or AMD Ryzen 2000, then unfortunately, Windows 11 will not work with it. However, there are exceptions - Microsoft has published a list of older processors that are also supported.

https://key-soft.pl/en/blog/na-jakich-komputerach-zainstalujemy-system-windows-11-wymagania-sprzetowe