DOS on Mac

NJRoadfan

New Tinkerer
Feb 6, 2022
77
22
8
MMX CPUs require split voltage supply. They just won't work in a standard Socket 5 motherboard hence why Pentium Overdrive MMX CPUs exist (they have the proper VRM are part of the chip).
 

V.Yakob

Tinkerer
Sep 6, 2023
132
49
28
Syktyvkar
But this Socket 7, and the manual doesn't anything extra, it's written simply
P133
P166 MXX
P200 MMX

I didn't see any other reservations about it.
 

V.Yakob

Tinkerer
Sep 6, 2023
132
49
28
Syktyvkar
I came across a great topics (1, 2) here about the expansion card for Q950.
After ordering on January 12, I received it yesterday and it is already installed and working today. :)
Due to the fact that the boards are very small, the minimum order is 5 pieces.

Now DOS card on Q950 looks much better.

Thank you @alxlab for sharing your project. :)
 

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PentaxEnthusiast

New Tinkerer
Jan 27, 2026
13
8
3
SATX
I have a few Pentium MMX chips kicking around, if I ever get my hands on a Quadra 950, I'd like to try this as well!
Honestly not sure what I'd even use it for, but it would be a cool thing to have.