https://wccftech.com/most-modern-pcs-will-have-no-issues-running-windows-11-amd-intel-cpus-with-minimum-of-tpm-1-2-required/

With the announcement of Windows 11, Microsoft is making a big change to the requirements to evaluate the compatibility of PCs running AMD and Intel CPUs. This requirements comes down to the TPM (Trusted Platform Module) support and there's been a lot of confusion going around but that needs to be sorted out.

The Trusted Platform Module or TPM is a security check which has been made a necessity to be enabled for the latest version of Windows 11. Microsoft recommends that systems with TPM 2.0 are ready for Windows 11 but systems running TPM 1.2 will also be supported. Now, this is just a security feature and there should be no impact on performance with either version of TPM. What makes this requirement interesting is that it wasn't a required check-in in the previous versions of Windows.