i3-8100 is on the MS cpu list for Win11. Vostro 3670 has TPM 2.0. just double check you have secure boot enabled in bios.  or you can just try install win 11 and see if it will let you proceed. TPM 2.0 Security Allows you to enable the Trusted Platform Module (TPM) during POST. The options are:• TPM On (enabled by default)
I hoped this would be a simple question, but now I am not so sure..... Is the Vostro desktop tower model 3670 ( supplied in the UK ) capable of running windows 11 ( Intel i3 8100 processor, but this is secondary to the motherboard question ) The Dell Win 11 compatibility checker website says it is, 100%, but Dell help advisors either say no / don't know / will it be Win 11 pro or home / avoid the question altogether ! Any sensible advice would be much appreciated !
Windows 11 compatibility