It's actually a hybrid pc, running on a super 7 AMD K6-II+ 550MHz with an ISA sound card with opl2 fm synthesis chip and a pci one. It has the unique ability to disable the L1 cache and make it a slow 386 in terms of performance, or disable L2 and L3 and lake it perform like a 486. So I dual boot to real DOS 6.22 for those special old games with CPU speed scaling issues, or those taking advantage of opl2 chip and at the same time I can boot to windows 98se and enjoy any dx6-7 game until 2001 (xp era) or enjoy at it's full glory some glide API game on the voodoos. All that in just one pc. It's as versatile as it gets, and you know better than me how fast things were progressing back thenb and what incompatibilities they had between each generation. I'm born in 1990 after all
Later Pentium II and above couldn't simulate the speed of a 486 by disabling caches, so you either get a 286 or a super fast Pentium. That's an issue on speed ensitive games of the past.