Hi,
I have little heatsinks with an official metal enclosure.
Ambiant temperature: 19˚C
root@bpi-r3:~# sensors
mt7915_phy1-isa-18000000
Adapter: ISA adapter
temp1: +55.0°C (high = +120.0°C, crit = +110.0°C)
mt7915_phy0-isa-18000000
Adapter: ISA adapter
temp1: +45.0°C (high = +120.0°C, crit = +110.0°C)
And with my infrared thermometer :
phy1: 43.4°C
phy0: 37.9°C
cpu: 40.5°C
switch: 41.7°CIs it possible to see if the BPI-R3 is thermal throttling?
It seems like BPI-R2 has cpufreq (MT7623 overcloking, voltages, powerconsumption, governors). But on my RPI-B3 the cpufreq folder is empty on both the stock image and openwrt snapshot.
And I don’t see mt7986 in this file:
Bpi-r3 is a very new board and we have the very basic support for it merged for 6.3,thermal and pwm not yet completely,cpufreq is maybe next,but all takes time and is some work which has to be done including testing. So please do not expect all is working out of the box.
Yep, BPI-R3 is pretty hot with stock case and radiators. 56-57 ˚C on average without much load. 65-67 ˚C under some load. And I don’t see too much sense in installing fan, because stock case hasn’t any ventilation holes. It is sad, because I like this case. I’m looking for better “cooler” case and normal radiator with quiet fan.
I similarly considered a single large heatsink given the mounting holes but the chips covered aren’t entirely the same height, particularly the switch chip MT7531. Did you use some thick heat pads perhaps?
That’s interesting. I purchased the kit with the board, case, antennas, and power supply but didn’t get any heat sinks in the package. If just adding the heat sinks drops the temps that low, that’s probably the way to go.
root@jakarta:~# sensors
mt7915_phy1-isa-18000000
Adapter: ISA adapter
temp1: +70.0°C (high = +120.0°C, crit = +110.0°C)
mt7915_phy0-isa-18000000
Adapter: ISA adapter
temp1: +55.0°C (high = +120.0°C, crit = +110.0°C)
The case is pretty bare bones. It would have been nice to have the LEDs exposed and maybe a punch out for the USB header.
It seems like others have started some models for a 3D printed case, so that might be the way to go in the future. I also might try my hand at replacing the top with acrylic with ventilation.
I think I’m going to get a block heatsink and cut it to size. If I get ambitious I’ll tap some holes to mount it.
Are there tasks that can be farmed out? Even if it’s just testing, I’m willing to help.
There are the kits with and without the heatsincs. The temps are without the top of the enclosure. I believe that some holes in the upper and bottom frame to allow some convection plus a low noise fan.
Actually I have put thick thermal pads under the SoCs so the heat transfers to the whole case.
Do you mean on the other side of the pcb?
Yes, exactly. Every bit helps there.
here you find my heat sink setup which results at 26°C CPU Temperature, running a CPU/IO stress test.
Can someone suggest single big radiator, which cover all bpi chips and fits the board (mounting holes etc). Without fan, I can’t see reason in using it with default metal case.
I ended up buying this aluminum heatsink and tapping holes. I put thermal pads on everything but the MT7531 to get the chips mostly level.
I did the 12v fan mod as well and may end up adding a fan. My closet has a relatively high ambient temperature (30ºC) and little airflow, unfortunately.
Just a question; you think this bigger single heatsink works better than the individual ones (which are included in the package “deal”)?
Also note that you should be sure about the different relative heights of the chips, you can’t use the same thermal pads on each chip.
(Image originally from Michael Fischer)
There’s a bunch of considerations. Using the same sink across multiple chips spreads extra heat to cooler chips, for example. I leveled the chips with thermal pads and based on temp graphs, adequate contact seems like it’s being made.
I ended up getting a fan anyway and need to mod the fan connector down to 3-pins and the smaller pitch. I’ll drill a grate above the heat sink and possibly some vents on the left side of the case.
Look like this thread is also my concern, I’ve been experiencing periodic disconnection about every 2 days few weeks ago. still not sure if the temp is the culprit.
wrote a script to log the temp readout every minute for observation… case all closed with 53c, 49c, isn’t bad right?
(while true; do sleep 60; echo -e "$(date)\n$(sensor)" >> /mnt/nvme0n1p1/sensors.log || break; done) &
Wifi disconnection is handled here:
We should leave this thread temperature related (measured temp reaching high values) not for effects possible caused by higher temp