Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Yogi Cavalier

macrumors newbie
Original poster
Dec 16, 2019
15
2
NEPA
High temps when system is at rest? Which is right.

TUNABELLY TEMPERATURE GAUGE READINGS
CPU A CORE = 153ºF
CPU A DIODE= 84ºF
CPU A HEATSINK =82ºF

MACS FAN CONTROL 1.4.12 READING
CPU A DIODE =84ºF
CPU HEAT SINK 82ºF
CPU A CORE FROM PCECI =90ºF

All temperatures across the board are the same on each, only the CPU core temp on one reads 153ºF and on the other it reads 90ºF. How can I know which is right. Which is more reliable?
 
Thanks for your quick reply.
Tunabelly's CPU core reading's are about 60+ºF higher when checking one at a time with the other off.
 
High temps when system is at rest? Which is right.

TUNABELLY TEMPERATURE GAUGE READINGS
CPU A CORE = 153ºF
CPU A DIODE= 84ºF
CPU A HEATSINK =82ºF

MACS FAN CONTROL 1.4.12 READING
CPU A DIODE =84ºF
CPU HEAT SINK 82ºF
CPU A CORE FROM PCECI =90ºF

All temperatures across the board are the same on each, only the CPU core temp on one reads 153ºF and on the other it reads 90ºF. How can I know which is right. Which is more reliable?

1) the temperature you should really care about is just the diode temperature. In both case, 84F, very cool.

2) that core temperature from Tunabelly is “core from processor hot”, which means, the higher the better. When idle, “diode + core to prochot“ usually around 100C. So, that looks correct to me.

3) MFC’s core from PCECI is a meaningless temperature, AFAIK, not tuned / indicating for anything. You should simply ignore that.
 
Thank you for your reply. It appears to me, you have a much deeper understanding of those temperature reading than I do.

I'm having a hard time understanding what "core from processor hot" means. I have seen that number go down as I use more programs, but i have also seen it go higher when doing a video render. The average computer user would panic watching that number rise (as I do), so why would Tunabelly list such an arbitrary number as the CPU core temp?
 
I took your advice and contacted Tunabelly for more if. This is what Matt Austin for Tunabelly said:
"What you are referring to is on the Mac Pro models with Xeon processors, they expose “Relative to ProcHot” sensors which in TG Pro will show in a separate area. You’re correct that the higher the number, the further the temperature is from the maximum allowed."

Thanks again for steering me in the right direction with regards to “core from processor hot” and the higher the better. I guess, I'm just a thick headed old man.
 
  • Like
Reactions: h9826790
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.