Custom Acrylic case with 8cm fan on RPi3B+ 1400MHz

[soharddbwarez]

Hi, I just wanted to share the results of my customized cheap acrylic case and custom heatsinks that I used on my Raspberry Pi 3B+

On the top side I have the biggest heatsink that I could find that will just fit on the processor with no room to spare when I've connected a 40 pin cable to the GPIO port, I also made another heatsink that fits on the network chip and I have a square copper plate of about 2cmx2cm on the bottom side on the memory chip.
I customized the top lid of the case and made a big hole in it so the fan doesn't have any restrictions to blow air on top of the heatsinks and on the GPIO side of the case I made the hole a little bit bigger to let the warm air escape to the side.
It works great this way, it does attract a lot of dust and you can see that on the picture that I've included but even after running continuously for more than a year it performs just as well as on day one and never goes above 50 degree Celsius when running benchmark tests.
At the time of running the stressberry test my room was about 25 degree C and the highest temperature measured was 49 degree C so my delta was 24 degree C with this setup which is pretty good I think, good enough for me.

[soharddbwarez]

NOW Overclocked

So my first post with the temperature results was the control, now however after reading some very specific documentation about overclocking the Raspberry Pi 3B+ the right way I found the settings that are working out really well.

Below I've inserted the new chart from the test that I did with the overclocked settings:

Here are the details of all the settings that I've added to the config.txt file:

• force_turbo=0
• arm_freq=1500
• arm_freq_min=700
• core_freq=500
• core_freq_min=250
• avoid_pwm_pll=1
• sdram_freq=500
• sdram_freq_min=400
• over_voltage=6
• over_voltage_min=0
• over_voltage_sdram=2

The highest temperatures that I've seen when running stressberry with the overclocked settings are 51.5 degree Celsius but only very briefly, my room temperature at the time of testing was about 27 degree Celsius so it has a Delta of 24.5 degree Celsius.

Best regards,
Ricardo Penders.