A/UX made me need to source a 68040 20Mhz

[AltRN8]

I decided to go super esoteric this week and run A/UX on some old apple hardware. I read through compatibility chart and decided to pick up a nice low profile Centris 610 for $20 off of ebay. Of course I was impulse and didn't due my homework as the Centris 610 has only a 68040 LC which I can't run A/UX on.

Fortunately the 68040 on the Centris is socketed and I just need to swap in a full 68040 20Mhz processor. I googled to my hearts content but could not really find any place that had any.

Does any one have any suggestions where I might locate one?

[tone007]

Maybe a faster full 68040 chip (25mhz seems the most common) would work at 20mhz for you?  People overclock all the time, underclocking could be worth a shot.

[rkauer]

Just don't "downclock" too much: Motorola's site states that every CPU have a low and a high frequency limit.

 For the 25MHz unit, the lowest possible clock is 28MHz (taken from the '040 datasheet), which will make the CPU run at 14MHz.

[Zac67]

You can easily underclock a higher rated 040 - minimum clock should be somewhere around 5 MHz afair.
[...] The manual (section 11.5) states 20 MHz minimum for all speeds. I believe you could  even run below it, but actually any speed grade will do for you.