EDIT: I noticed something weird when I tried different graphics cards on the 5DVX with the Pentium-S 120.
While I was using the S3 Trio Virge DX, the heatsink was completely cold, even while playing DOOM and Rise of the Triad, when I swapped it with the older S3 Virge, the heatsink started getting hot even at the BIOS boot screen.
What could it be ? I'd stick with the S3 Trio Virge DX since the heatsink stays cold, but I get flickering artefacts on DOOM (pretty much only on DOOM, other games seemed to run fine) which I don't get on the older S3 Virge.
EDIT 2: On another round of tests yesterday, I noticed that the heatsink was warm (not hot as before) with any graphics card, I also tried an Avance Logic but nothing showed on screen with her, probably the TV, I'll try her with another monitor.
The old S3 Virge and the newer S3 Trio Virge DX both seem to run Duke Nukem 3D in VESA mode and classic mode at the same way, it's playable but not perfect, probably an MMX 200 would fix that.
Currently assembled vintage computers I own: 11
Most important ones:
A "modded" Olivetti M4 434 S (currently broken).
An Epson El Plus 386DX running MS-DOS 6.22 (currently broken).
Celeron Coppermine 1.10GHz on an M754LMRTP motherboard