[Zfast4y0u]

I believe thats a hotspot.

 

[Zfast4y0u]

What a coincidence, I noticed the other day that the GT 1030 I used for a long time in a PC for not games, that its hotspot is just a 10 deg C offset! Many many months I used that card and never noticed it was just a 10 degree offset lmao. After figuring it out I watched it more closely and also found it must be calculated in a weird way, beause very very very infrequently 10 changes to 9.9 or 10.1.

Anyway, about the 5800X3D - the Tctl/Tdie is definitely not an offset because I've been watching it a lot and it varies a lot. Unless a multiplier is used for the offset - a fraction derived from a temperature delta or something crazy. It especially annoys annoys me because the "CPU temperature" that the BIOS uses, is that... It's able to swing pretty wildly, up and down 10-15 degrees while the cores are only moving 1-4 while the power's not changing much (and I'm looking at the summed value of both regulators (in watts) that drive everything on the CPU package afaik).



It might be. If it is though, it's the weirdest hotspot I've observed -- most often I find it's pretty close to the temperature of the cores and the other CPU sensors, maybe 2-3 degrees warmer than the cores. Mostly its just a different temperature during high throughput data processing (as mentioned in OP). Though power doesn't increase much over normal use, temps rise high and make my fans noisy. At this point I basically have them only spin faster than idle once 72 degrees is reached. I have enough and they're big enough and moving enough air that even though they don't spin up until 72 degrees, at idle with 3-5% CPU utilization, (cores 15W, SOC 18W, package power 40W)

1.) average core temperature is 42.2 degrees
2.) CPU CCD1 (Tdie) is 48.9 degrees
3.) CPU die (average) is 48.4 degrees
4.) CPU (Tctl/Tdie) is 53.1
5.) L3 Temperatures average 41.6

I don't know what it is about Tdie... in #2 and #4 above it's included. #2 by itself, and #4 with Tctl. Tctl isn't listed anywhere by itself that I can see. If 4 is the average of Tctl and Tdie, then
hypothetical Tctl would be 57.3 degrees!
But that could be nonsense.. probably is.

you can quick google it, it might be they have now multiple hot spot sensors, after all amd has chiplets. as far i know, nvidia cards have hotspot temp too, and every single card has hotspot 15c warmer ( give a take 3c ) then avrange core temps. hotspot is hotspot, its temp in split of a second, and its not always on same spot on the die, its just highest reported temp across die at any given time, understand?

 

[Zfast4y0u]

solution to make the fans don't go like a 16yr with a Honda Civic is chaging the temperature hysteresis in relation to the fan speed. You can change the value on the BIOS to like 10°C

I went and bought a fan controller with 8 channels that support up to 30w each, got tired of speedfan and software control in general not to mention too little fan headers on mobo, i use it now only to set pump speeds manually, fan speeds i control now on the front pannel of a pc. Set one speed and all is good no matter the temps

 

[Zfast4y0u]

The CPU runs hot. Mine will hit 90C very quickly no matter what I do, so... uh... surprise?

you use air cooler on 8 core chip. you probably overclocked too? you need AIO 360mm for peace of mind