If it has a somewhat recent Intel CPU it should work. Look for "PTT" or "Platform Trust Technology" in the BIOS (which is Intel's embedded version of the TPM).
I installed Win11 on a PC I built in 2018 (i7-8086K CPU) without problems (they actually made the
installation media available one day early yesterday). Just enabled PTT, disabled CSM/Legacy mode, and enabled Secure Boot.
Haven't had much time to play with it yet, but I find the UI much nicer than Win10's (probably because it's more similar to MacOS

). It also seems much more responsive. I read somewhere that Microsoft tuned the thread scheduler to make more resources available to foreground tasks, that seems to have worked.