To iterate points already made, yeah you really need to get into P60/66 socket 4 systems as at least a board combo with motherboard, CPU and heatsink, because tracking everything down separately will take years, and you'll probably overpay for the last thing you get out of desperation.
By 1995, with fast 486es around, and faster Pentiums on the market, they definitely did not look good and that was an era of mass scrappage. They had an edge in CAD and Scientific work early on. But 16 bit windows and mass market games of 1993 and 1994 were not a "killer app" for them. However, if you clung on to one through late 1995 and into 1996, "everything was turning up Pentium" windows 95 runs great on mine, and while the hardcore gamer would not have been satisfied with their performance vs a Pentium 100, they did allow you to play true pentium instructions only games, albeit slower than anything but a POD 63. In relative terms they gained performance again when everything was 32 bit and would have made a bearable office/web/casual gamer box through the later 90s.
I got mine just before/around turn of the millennium, in the "grabbing anything that computes" phase to get more of the fam online and to "unload" mine and my wife's machines. Setup with a 56k modem, the P60 was capable of browsing while playing MP3s with winamp, which the top end 486es could not do... you could play an MP3 maybe, but doing anything else would stutter it, drop it out and make whatever else you were trying to do also painful. So Socket 4 would have turned into a reasonable long term buy, but it took the software catching up to take advantage of Pentium architecture before Pentium was ready for primetime and really pulled away from 486 cores and there was that few years where it looked like a complete turkey. On data available to me at the time, and disregarding the "it'll get better" promises, I went with fast 486 in the mid 90s. I could have scraped up enough for a P75 system maybe and that would have been a better choice. But I was put off by the trash talking of how lame the bus was at 50mhz on Pentiums... and was not aware at the time that P75s by the time they were mass market, would overclock A LOT. So I was fooled by the pentium "dead spot" also.
Edit: POD 63/83 for a "barely a pentium" choice do of course have the additional risk of badly coded check from the programmer that go "This is a 486 so I'm not even going to try to work" due to whatever parameter they looked at to define whether they were on a pentium machine or not.
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.
