CPU Package Temp

[Dean.P.]

When running a P95 stress test my CPU package on (3900X) reaches 85C but my CPU core temps are 50C using noctua NH-D15 + a lot of case fans. Should I worry about the package temp? I am running at 1.300V on the CPU on the ASUS Crosshair Hero VIII Wifi X-570.

[5x5]

You're fine. P95 is a very intensive task. Use Aida64 for thermal testing

[Dean.P.]

18 minutes ago, 5x5 said:

You're fine. P95 is a very intensive task. Use Aida64 for thermal testing

Okay thanks for the heads up, out of interest what actually is the package temp and why does it differ to such a large degree to the CPU temp?

[5x5]

1 minute ago, Dean.P. said:

Okay thanks for the heads up, out of interest what actually is the package temp and why does it differ to such a large degree to the CPU temp?

The package temp is the overall CPU temperature including cores, Io die, memory controller and etc. Usually it's close to the cores so if assume you need more thermal paste or mounting pressure may be slightly uneven

[Beowulff83]

2 hours ago, Dean.P. said:

Okay thanks for the heads up, out of interest what actually is the package temp and why does it differ to such a large degree to the CPU temp?

Depends on how the the hardware reports back.  I would ignore your cpu core temp and focus on package temp.   I found an issue with ryzen first gen with asrock ab350 and r5 1600.  The cpu fan was linked with cpu tdie.  Most reporting software showed cpu temp based off of the Tdie.   But the true cpu temp was cpu Tctrl temp which was 20* hotter.  Once i found this and switched my cpu fan and system fans to a curve based off of Tctrl my temps went way down and was able to overclock.  

 

[Dean.P.]

On 9/16/2019 at 3:15 PM, Beowulff83 said:

Depends on how the the hardware reports back.  I would ignore your cpu core temp and focus on package temp.   I found an issue with ryzen first gen with asrock ab350 and r5 1600.  The cpu fan was linked with cpu tdie.  Most reporting software showed cpu temp based off of the Tdie.   But the true cpu temp was cpu Tctrl temp which was 20* hotter.  Once i found this and switched my cpu fan and system fans to a curve based off of Tctrl my temps went way down and was able to overclock.  

 

Yeah I've been reading that AMD gives a 20C offset on their temps for some strange reason, a friend of mine has a 3800X build and his cores are around 58C under P95 using the Alphacool Eisabaer Extreme 280 AIO but hardware info shows a package temp of 78-81C. We repasted and reseated his CPU and exchanged the fans for 4 industrial 3000RPM noctuas in a push pull configuration and still couldn't get his package temps down.

 

On 9/16/2019 at 12:57 PM, 5x5 said:

The package temp is the overall CPU temperature including cores, Io die, memory controller and etc. Usually it's close to the cores so if assume you need more thermal paste or mounting pressure may be slightly uneven

I double checked my mounting on mine and my friends and both the pressure and paste application was spot on all i can think is that hardware info is pulling from a different sensor or that it is adding the 20C delta to the actual temperature recorded 

[5x5]

14 minutes ago, Dean.P. said:

Yeah I've been reading that AMD gives a 20C offset on their temps for some strange reason, a friend of mine has a 3800X build and his cores are around 58C under P95 using the Alphacool Eisabaer Extreme 280 AIO but hardware info shows a package temp of 78-81C. We repasted and reseated his CPU and exchanged the fans for 4 industrial 3000RPM noctuas in a push pull configuration and still couldn't get his package temps down.

 

I double checked my mounting on mine and my friends and both the pressure and paste application was spot on all i can think is that hardware info is pulling from a different sensor or that it is adding the 20C delta to the actual temperature recorded 

Possible - hence why Ryzen Master is always the first software to use - it's a sanity checker against broken software like HW Monitor and Speccy - both of which report random gibberish