Posted By
crock
on 2018-01-03
17:54:27
 |  Re: Possible 8501 replacement kit?
The answer to that is somewhat subjective but empirical evidence would suggest yes.
Some of us on the CBM hackers list did some measurementts a few years back to determine the current draw and temperature of the various 7501/8501 CPU revisions that we could find. The results were that the later CSG branded 8501's ran 10-12 degrees cooler that the typical MOS 8501R1's. With no heatsink the CSG chips we tested (datecode 1490) ran at around 46 degrees, as opposed to the MOS chips which varied between 57 and 62 degrees.
I can't speak for an 8501R4 as that was not a revision included in the tests, but there were 8501's (with no revision) dated 1087 which ran just as hot as the early ones.
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