Actually, I have a IBM PS/1 Multimedia edition. It must have been one of the first generation but it does not have VLB it is all ISA.
And it came with a Intel 486dx2-50mhz CPU and Sound Blaster 1740 sound card and 2x Panasonic CDROM drive.
8kb cache and 8mb ram.
So most of the IBM PS/1 computers from 1993 and 1994 are basically the same. Being with the onboard Intel 486sx-25 CPU
You can upgrade the CPU, RAM, Cache, and add a Sound Blaster card.
The 1994 Multimedia edition may have 32bit bus IDE controller. I am not sure.
You are right. 1993 was a strange time for Multimedia computers. Builders where pushing the capabilities of the computers with minimum hardware specs and marketing these computers as “Multimedia computers”.
But I think they where very under powered to have been a good performance multimedia computer.
A Better build would have been this
4x CDROM drive
16-bit sound card.
Color SVGA monitor.