I’ve done several 15 minute stress tests on my VIM3 using Antutu, here are 3 results that best represent the average of the sample:
- Bare Board, 60C (Ambient: 29C)
@RRZC777’s Passive Heatsink, 46C (Ambient: 28C)
- 3705 Cooling Fan, New VIMs Heatsink, 36C (Ambient: 27C)
It is winter time now, and the ambient temperature drops quite rapidly in the evenings, you can see that as I perform the tests, the ambient temperature drops from 29C to 27C, in the course of an hour. As of this writing, it is hovering around 25C.
Interestingly, even with the bare board, I did not notice any CPU throttling during the Antutu test. We can see that the clock speeds remain stable throughout each test. The temperature probe was attached to the surface of the A311D SoC, and the other probe was left to sense the air temperature. I used a fresh installation of Android, so there aren’t any other CPU hogs or apps running in the background.
The best result was obtained with active cooling, with the fan in automatic speed mode. The passive heatsink also gave quite a satisfactory result, and I feel would be useful for people with sensitive ears.
Each picture was captured just after the test completed.