I don’t know of very many desktop makers that have tpm’s. Or laptops really unless you search for them.
The one thing about Win8 that I do like is that it’s more like Truecrypt. Win7 demanded a tpm and/or a usb drive to work. Win8 you can do password only in gpedit.
I think you might have your facts confused.
Win7 runs fine without a TPM. It’s not a requirement.
Win8 requires UEFI AND a TPM to function properly. If you have a copy that functions without either, let me know, because they’re as rare as hen’s teeth.
Unless you’re talking about RC. That doesn’t count.