“Almost every CPU in the last 5-7 years has a TPM,” explains David Weston, director of enterprise and OS security at Microsoft.
If that's the case, then those CPU's should be supported to be able to upgrade to Windows 11.
BURN. Note that Microsoft previously mentioned that the CPU generation was a "soft floor" requirement. If you met the other requirements, you would get a warning when installing Windows 11, but you could still proceed:
"There are new minimum hardware requirements for Windows 11. In order to run Windows 11, devices must meet the following specifications. Devices that do not meet the hard floor cannot be upgraded to Windows 11, and devices that meet the soft floor will receive a notification that upgrade is not advised.
Hard Floor:
- CPU: Core >= 2 and Speed >= 1 GHz
- System Memory: TotalPhysicalRam >= 4 GB
- Storage: 64 GB
- Security: TPM Version >= 1.2 and SecureBootCapable = True
- Smode: Smode is false, or Smode is true and C_ossku in (0x65, 0x64, 0x63, 0x6D, 0x6F, 0x73, 0x74, 0x71)
Soft Floor:
- Security: TPMVersion >= 2.0
- CPU Generation*"*
https://docs.microsoft.com/en-us/windows/compatibility/windows-11/
The webpage was later dumbed-down and they removed the soft/hard floor details. This doesn't necessarily prove that the soft floor has been changed, they may simply be obscuring it.