and quite a few people completed Quake 1 using 060 + software renderer.
Hey I even completed it on an 1240/40MHz with ZII Graka back then whe it was brand new from ClickBoom. Seeing it from today I can`t see how I could endure this, but this experiance influenced my oppinion about what is fluently quite a lot.
When some PC guy is telling me how slow shoter xyz is on his machine so he hast to update his graka, I just look at the screen and say: It`s running fine, heck I even would dare to increase the resolotuin a little bit more.