Originally Posted by Chaser
Is there any explanation about what those entries in "FAN" and "Powertune" doing exactly?
Specially the difference between TDP and Max Power Limit or the hysteresis value, Min/Med/High Temp etc.
PowerTune values relate to GPU on PCB:
TDP: "Change TDP limit based on customer's thermal solution"
TDC: "PowerTune limit for maximum thermally sustainable current by VDDC regulator that can be supplied"
Max Power Limit: "This power limit is the total chip power that we need to stay within in order to not violate the PCIe rail/connector power delivery"
Fan section in Polaris bios editor does not show fan mode (plus some other values). There are 2 types of fan mode Lookup table (LUT) and Fuzzy Logic (FL). From what I have seen Polaris factory ROMs use FL.
Basically LUT uses Temp.Hysteresis and the 3 Temp/PWM values (Min,Med,High). FL uses Max PWM%, Max RPM, Sensitivity and Acoustic Limit (MHz), then also FL mode has it's own Target GPU temperature value which is not shown in Polaris bios editor (plus there are other values).
In Hawaii bios mod
OP is info on Temp.Hysteresis, heading How to edit Temperature Hysteresis for Standard Fan Mode (LUT).
If using Polaris bios editor you don't achieve a fan modification as you require open a new thread in the context of you modification and I'll share what information I can