FWIW, I'm writing this on a 8 y.o. i5/8GB ThinkPad (T530) that I've upgraded with a SSD, and it runs Win10 just fine. Mind you, this is a generic install w/ no OEM bloatware or 3rd party anti-malware. This page may be helpful:
https://support.microsoft.com/en-gb/...cle-fact-sheet
TL;DR Win8.1 will not have security patches after 10-Jan-2023, while Win10 must take a feature update at least every 18 mos. to continue receiving security patches.