What is the maximum temperature a 68040 @40 mhz can tolerate?
I already read the 68040 users manual from Freescale, but then there I could not find the information I need. I want to know this since I plan to overclock it and measure its temperature with a digital thermometer with an alarm so as to know when I am reaching the absolute limit, and then stop, before I kill it.
The other thing is, where on the 68040 should i put the temperature sensor? Is the heat conducted evenly to the entire chip enclosure, or does it get hotter on the center?
I would venture to say the actual point of failure will vary chip-to-chip.
I think a better question would be - what is the fastest stable speed you can over-clock an 040. I do know PP&S factory over-clocked the 25mhz part on my accelerator to 28mhz and that board was very stable.
Lets just say the 040 was not know for being real overclockable... 060 will take over-clocking more reliably than a 040.
