I used to do the bios hacks on the cheap Fry's K7S5As.
One of my MOST favorite things is just how good AMD's modern chipsets are. Once Intel diverged in the 90s, AMD (as well as Cyrix/VIA/IBM x86 stuff) was relegated to some truly ehhhh stuff. Don't get me wrong, it usually worked outside of some strange incompatibilities here and there, it's just that the quality really varied quite a lot. SiS, VIA, ALi, just usually somewhat underwhelming, and often the one kind of annoying thing despite how good many of the K6 and especially Athlon and beyond actually were as CPUs. Poor plug n play, 4 in 1s, slow IDE performance, often abominable sound ICs, and it was usually the best plan to wait for th second