I ordered some of those reproduction module blanks to play with.
Among other things, I want try try using sockets instead of soldering the chips directly on them.
The other parts (including the mobo to test them in) aren't here yet so I'm doing the research and collecting files.
I will need to rework the pre-tinning. Its full of blisters/bubbles as if the PCB wasn't cleaned before it was applied.
The PCB itself looks pretty good.
I've seen that same cahce-voltage information in both Amptron and PcChips docs now.
The PcChips version is all over the place but made generic probably for rebranding purposes.
Back in the day even small mom-n-pop shops would rebrand PcChips as their own house brand.
PcChips made it easy. You could order without any branding on the boxes or in the manuals.
I visited the PcChips showroom in Hong Kong in the 90's and the rep said you could order without BIOS chips too.
(It was intended for buyers ordering 100's or 1000's of boards. I just found myself in front of it so I went in.)
Amptron manual version:
PcChips manual version:
I suspect the cache module voltage is set by the same jumpers that set CPU voltage.
The board I ordered isn't here yet so I can't look into that.
I've seen a lot of model different numbers on these modules.
I suspect some of the 3rd party distributors where making their own modules in-house.
I've seen a number of those 3rd party website via wayback now.
I've seen none that offered the modules for sale outright.
I suspect if you didn't order/buy the board with the module option as original you couldn't get one.
I don't understand why PcChips is "a thing" either. They gave bottom-end a lower bottom.
In the late 90's a few shops outsourced testing their returns to me because their own techs couldn't keep up with them all.
I would sometimes see 5 or 6 out of the same (factory) batch and the stability varied a lot even within batches.
It had to be flaky quality control (or none) at the factory.
They ARE fun to play with, but that's about it. I wouldn't choose one for a final build.
--- Here's a kicker
Hsing Tech (The parent company. PcChips was their distribution branch and public 'front'.) merged with ECS in 2005.
That more or less means that PcChips is still around.
GRUMPY OLD FART - On Hiatus, sort'a
Mann-Made Global Warming. - We should be more concerned about the Intellectual Climate.
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.