Mount a HeatSink on the Rock64 using 3M Thermal Tapes

[dantheperson]

What's the SOC temperature with the official heatsink under full load?
(like immediately after make -j 4 on the kernel)

The temp cut off for RK3328 SOC is 120C. It's from the manual. From my tests.. I never got more than 80C using Xenial mate image and lots of things rolling, even a chess engines tournament. I get to 100% cpu and fully used RAM for almost 5 hours non stop  and never got near of cut off temp (120C).. I find putting thermal stuff on my Rock64 4GB RAM is pretty much only for aesthetics.

I tried with a small 40x40x10mm 5V fan right on top of SOC and get -10C. Yes the fan is a nice add on but not required. At first I was thinking trying it.. Maybe the cpu would perform better, but it's not the case at all.

Are you sure the reason it's not going over 80 is that it throttles at 80?  I am running Armbian and find the CPU throttles from 1296 down to 1200 or even 1008 when running cpuburn burnCortexA9 and the temp hits about 81.

Running other apps that generate full load it hovers around 79 and does not throttle.  Only cpuburn causes throttling.

I am using the factory heatsink.