It does have heatsinks on a number of the components, increasing the surface area for cooling, and with ventilation making it significantly outperform the official case.
I guess we need to be patient and wait for some sort of official update from the Pi Team.For completeness, removing the top white plastic top does make a bit more of a difference, with the temperature dropping to 70°C, 42°C above ambient.how thermal testing could be missed by the Pi4 team is beyond me….I found some solutions , but most of them are coding, which I am not that fond of , just buy an additional fan to cool it .There are many in the market , I found this to be the most affordable with many features.As I’ve shown in a number of my more recent posts, a Fan does help. There is talk in the forums of some upcoming USB firmware which may help but doesn’t claim to solve this issue.All show a significant increase in power consumption between the Pi 3 and Pi 4.
Though the Pi 4 is 60% hotter than the Pi 3 in the same environment.The likely cause of this increase heat output is, of course, a higher power consumption.
However as noted in the The FLIRC case once again uses a large surface area of metal to provide a large heatsink combined with a Raspberry Pi 4 enclosure. Available from lots of sellers for as low as $12.
With the CPU temperature peaking at 41°C, 45°C, 46°C and 48°C for the 1, 2, 3 and 4 core tests respectively.Running the 40mm fan at 3.3Volts instead of 5V, causes the fan to run more slowly and as a result noticeably quieter.Like running at 5V, this test at 3.3V doesn’t see any CPU throttling.During the 1 and 2 core stress tests, the CPU temperature remains about the same as the 5V scenario. Big fins, direct contact, 215g of aluminium :-) guess the outcome.The guys at The MagPi also made a test of coolercases - it's here:The motivation behind that massive cooler was - to really passively cool it under any imaginable circumstances (low air pressure, maximum synthetic load,...) and never burn fingers, never underclock. Raspberry Pi 4 getting hot?
But a hot chip is never a good thing in the long term. The little fan does a good job cooling, but it's also fairly loud when it is doing so, due to its diminutive size.
This reduces the core clock speed from 1500MHz down to 1000MHz, as this is on the edge of the throttling window this drop in clock speed is sufficient to allow the speed to be boosted back up again, increasing heat, so throttling again.
Raspberry Pi 4.
If modifying stressberry isn’t something you’d be comfortable doing, let me know and I’ll see if I can quickly come up with something.Adrian, Actually I’ve just implemented the ability in a branch of stressberry. It gives me vibes of the days when I was overclocking my Pentium II CPU and catching motherboards on fire!The official PoE HAT includes a small-but-mighty fan which is positioned directly over the Pi 4's CPU. Leaving the system running several degrees hotter than the bare board Raspberry Pi 4.The relatively poor performance, with the addition of active cooling, is not really a surprise as the fans are directly mounted to the metal, with one face directly in front of a solid piece of metal, providing a very limited airflow over the metal fins.The current design of this case doesn’t offer any real benefit given the additional noise, additional power consumption and impact on some GPIO header pin access. The design of the FLIRC is certainly a step above the other designs.Under increasing load, the FLIRC is able to cope well, with the temperature peaking at 73°C and no signs of throttling. I used rpi-monitor to record the Pi temperatures. Pour notre montage, nous allons utiliser des sondes DS18B20 qui utilisent le bus 1-wire.
Coronavirus update. During the tests, the ambient temperature was 22-23°C. I decided to keep it simple and focus purely on CPU load at least for now. The following measurements were taken, note measurements were taken at various points in the day where the ambient temperature varied significantly.
December 28, 2017 March 4, 2018 Tim Home Automation, How To, Raspberry Pi My goal of this project was to track the temperature in different rooms in my house using multiple temperature sensors to send the data back to a raspberry pi and have the data stored historically so I …
If I can find a neat ‘mini rack’ with a decent fan, that is certainly an option, though the desire for better cooling overrides space in this instance.For those interested… I just spent 4.99 on Amazon and purchased 2 “pi-fans” (3×3 cm fans with flying leads).With the pi3b+ in the passive armour case, it peaks at 60.1 C running our tests.
I’ll re-run the idle test with the Armour case now and see what happens.I’ve no plans to look at overclocking at the moment. For ambient temperature measurement I setup a 433MHz temperature/humidity sensor and a ZigBee temperature/humidity, both logging data to my HomeAssistant setup.Tests were conducted on two Raspberry Pi4, testing different enclosure setups in parallel.