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S9 (Snapdragon) Thermal Throttling behaviour...

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By Haldi4803, Senior Member on 11th June 2018, 11:11 PM
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Howdy...

I've been wondering how the Samsung S9 with Snapdragon behaves when throttling.

it's very easy to test... just run this app called CPU throttling Test and take a look at Temperature, Clock and Performance.

This is a Screenshot from my Sony Xperia XZ2:

You can clearly see the Temperature reaching a critical point and the Performance dropping, while Frequency stays at the same 2.8ghz.

Here we have a OP 6 which does show the same behaviour... no Frequency Limit!



Looking at the SD835 Essential Phone:


or the even older SD820 HTC 10:


We do see a CPU Frequency Limit on both devices.

So... is this Max Frequency yet still reduced Performance a Snapdragon 845 thingy?
Simply do the Test for 2-5 minutes (until throttling becomes obvious) and we will know.

P.S going to Options and chaging Threads from 20 to 7 might totally change the behaviour of this test!
P.P.S Go into Options and correctly set Thermal Zones! If you don't know which nr is what... Terminal / ADB shell "for file in sys/class/thermal/thermal_zone*/type; do echo "$file"; cat "$file"; done"

Greetings,
Haldi
 
 
13th June 2018, 03:21 PM |#2  
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Somebody made a video with 3 SD 845 phones, but he got higher performance, did you change number of threads from default 20 and where phones cold when you begin testing?
I can't post a link, just search "OnePlus 6 vs Sony XZ2 vs Xiaomi Black Shark" on youtube.
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