Just ordered the M4 mac mini in honor of WoW's 20th anniversary

I found the base M1 couldn’t handle 4k in a demanding environment, but the M4 should be significantly faster.

(chart is far down the page)

Maybe find how much faster the M4 is versus the M1, and that’ll give you an idea? Classic is far simpler visually too which should help.

You may also have options you can fiddle with, to help you meet a given threshold.