you have to know exact CPU type code to know real maximal temperature. I.e. MC7447-RX1000LC ( "L" in this exact case means 1.3V / 105°C, but in other codes can has other meaning ).
Be careful, maximal G4 on-die temperatures very varies, most common are 85-105°C, but there are also 65°C versions.
Generally, I made many CPU swaps and overclocking, and good value for long CPU life is upto 45°C on CPU die
( i.e. cca 35-40°C on base of cooler) with 100% CPU load - this is my recomendation.[ Edited by sailor 11.10.2023 - 09:37 ]
AmigaOS3: Amiga 1200
AmigaOS4: Micro A1-C, AmigaOne XE, Pegasos II, Sam440ep, Sam440ep-flex, AmigaOneX1000
MorphOS: Efika 5200b, Pegasos I, Pegasos II, Powerbook G4, Mac Mini, iMac G5, Powermac G5 Quad