thermal limiting on i5 8265u, pls HELP

[Viniosu]

Hi (i'm new here) i've been trying to make this laptop (Samsung Expert X30) that is thermal throttling (according to limit reasons on throttleStop) even with a -150mv offset voltage both on cpu cores and cpu cache.
honestly, i dont know what to do now, i tried changing the thermal paste (which was pretty dry) but that didn't help much, i'll attach screenshots to the configs i'm using on FIVR and TPL.
(sorry if bad English, it's not my main language.)

 

[unclewebb]

Update ThrottleStop to the latest version. The old version you are using uses the WinRing0 driver. This driver is obsolete. The WinRing0 driver has had known security vulnerabilities for years.

i tried changing the thermal paste

What thermal paste did you use? Next time you replace the thermal paste, try using Honeywell PTM 7950.

i dont know what to do now

The 8265U is a low power processor with a 15W TDP power rating. Trying to run this CPU at 40W or 22W like your screenshot shows will cause the CPU to run hot and thermal throttle. Samsung did not include adequate cool to run your CPU at such high power values. Reduce the PL1 long power to 15W or 20W, reduce the turbo time limit to 8 seconds and reduce the PL2 short power setting to 20W or 25W. Any higher than this and your computer is going to run at 90°C and it will thermal throttle.

Post a screenshot of the ThrottleStop 9.7 TPL window. Some laptops will allow you to increase the thermal throttling temperature. The Intel recommended value is 100°C. Samsung decided to lower this to 90°C. This lower value will reduce performance.

 

[Viniosu]

What thermal paste did you use?

i did use a nitrogen basic from pcyes, it is 5,5w/mk, probably a bad thermal paste

Next time you replace the thermal paste, try using Honeywell PTM 7950.

i will get one pad of ptm 7950, but it will take a little bit of time, because here on brazil sometimes shipping from other countries takes time (2-4 weeks)

Post a screenshot of the ThrottleStop 9.7 TPL window

i dont think its possible to increase the thermal throttling temperature on this notebook

 

[PHVM_BR]

i5-8265U (without change windows priority)
with -100mV / -170mV (cache / core):

 

[unclewebb]

dont think its possible to increase the thermal throttling temperature

In the TPL window, lower the PROCHOT Offset value to increase the thermal throttling temperature. Intel default is 0 for the Offset value. This value is not locked so it can be adjusted.

 

[Viniosu]

In the TPL window, lower the PROCHOT Offset value to increase the thermal throttling temperature. Intel default is 0 for the Offset value. This value is not locked so it can be adjusted.

It's better than before, but its still very hot, i think the solution is to get a cooler base + the ptm7950, because this notebook doesn't have a good cooling.