john.lescault
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HOT Raspberry Pi 4 - 4GB

Sun Nov 10, 2019 1:34 pm

Hi,
Been using RPi since it's initial launch. Just got the RPi4 - 4GB and it is running HOT! Is this normal?

I am using the official case (which has no ventilation holes) but always used the official cases and assume they should be able to run with it especially since it is the official one. I also have heat sinks installed (which with the case probably do next do nothing)

Running a fresh install of Buster with desktop. Resolution of 1080

Idle temp with case is 80 degree. Without the case, it goes between 60 and 65 degree.

Any suggestions? Or just run without case? Hoping it doesn't come to that.

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DougieLawson
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Re: HOT Raspberry Pi 4 - 4GB

Sun Nov 10, 2019 2:20 pm

Fan, new case or run without that case.
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B.Goode
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Re: HOT Raspberry Pi 4 - 4GB

Sun Nov 10, 2019 2:52 pm

john.lescault wrote:
Sun Nov 10, 2019 1:34 pm
Hi,
Been using RPi since it's initial launch. Just got the RPi4 - 4GB and it is running HOT! Is this normal?

I am using the official case (which has no ventilation holes) but always used the official cases and assume they should be able to run with it especially since it is the official one. I also have heat sinks installed (which with the case probably do next do nothing)

Running a fresh install of Buster with desktop. Resolution of 1080

Idle temp with case is 80 degree. Without the case, it goes between 60 and 65 degree.


Any suggestions? Or just run without case? Hoping it doesn't come to that.


By the mysteries of Internet Serendipity, this linked post ended up adjacent to yours in my forum 'timeline'. https://www.raspberrypi.org/forums/view ... 3&t=256416

The upshot seems to be that an RPi4 board has been designed so that it can't get 'too hot'.

Moonmarch
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Re: HOT Raspberry Pi 4 - 4GB

Sun Nov 10, 2019 6:14 pm

There will be people that say the temperature of the RPI comptuer is not a problem there will be people on the forums that will say you need to fasten a 40mm fan to the case then drill some ventilation holes to cool down the RPI4 computer, well to be on the safe side I would recommend you buy a case that includes a small fan or build your own enclosure that can mount a 5 volt fan that includes ventilation holes.

The heat can cause the CPU to decrease in clock speeds until the temperature is lowered, the case with fan needs to fit the RPI4 computer these cases will cost about $15.

rosinski
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Re: HOT Raspberry Pi 4 - 4GB

Sun Nov 10, 2019 8:24 pm

I had similar observations (problem?) as I ordered the official Raspberry Pi 4 Desktop Kit, which included the official RPI4 case.

After getting it up and running, I checked the temp (vcgencmd -measure_temp) and found it running in the high 60's to high 70's. I then did some light web browsing and it quickly jumped to the high 70's. Next day I ordered a new case with a fan and some heatsinks from Amazon.

After installing the heatsinks, the temp dropped about 5-10 degrees but still got to the low 70's. After putting it in the new case with fan, temp dropped to high 30's with a max in the low 50's.

My conclusion is that I would NOT recommend the official RPI4 case as it just runs too hot. Get yourself a new case with a fan (and some heatsinks) and that will only cost you $10-15.

Rick

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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 11, 2019 11:07 am

rosinski wrote:
Sun Nov 10, 2019 8:24 pm
My conclusion is that I would NOT recommend the official RPI4 case as it just runs too hot. Get yourself a new case with a fan (and some heatsinks) and that will only cost you $10-15.
Unless it is throttling itself because of the temperature, it isn't running too hot. 70 degrees is fine.
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HawaiianPi
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 11, 2019 11:49 am

The Pi 4B needs some cooling for maximum performance. It heats up quickly when running moderate to heavy loads, especially when in a non-ventilated case. A nice, quiet fan alone is enough with adequate ventilation (no heatsink needed).

An alternate solution is a case that acts as a huge heatsink. Flirc makes a nice one that is pretty affordable. My Pi 4B4 is in a Flirc, and it keeps it cool enough to avoid throttling, requires no additional power, is completely silent, and won't cover the system with dust over time.

It also looks very cool (pun intended).
Flirc_RPi4.jpg
Flirc_RPi4.jpg (16.67 KiB) Viewed 2975 times

My 4B2 is in an open sided acrylic case with an SSD mounted on top.
Basically the same setup I used with this Pi3 previously.
It has a Pimoroni Fan Shim keeping it cool.
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Mark_F
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Re: HOT Raspberry Pi 4 - 4GB

Tue Nov 12, 2019 9:08 am

I got a fan case for mine. It was almost up to 85 degC while watching videos with VLC.
http://jandmf.com/index.php/2019/10/14/ ... -the-heat/
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SyncBerry
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Re: HOT Raspberry Pi 4 - 4GB - not so good Flirc case

Wed Nov 20, 2019 6:08 pm

I posted a disappointed buyer review for this case at pihut but they didn't publish it.
I said there is a manufacturing defect on the most critical part of the case, the one that drains heat from the SoC:
(big here)
Image
More, I never saw such a rough surface for a heatsink: it should be anodized giving a nearly mirror surface.
Also, they sacrificed the height precision of this inner tower, leaving at least 1mm free space between the SoC and the case so that it acommodates with the supplied fat thick thermal pad, then we can't use the thinnest thermal compound which is the state of the art when it comes to heat transfer.

Gomoto
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Re: HOT Raspberry Pi 4 - 4GB

Fri Nov 22, 2019 12:09 pm

I like the flirc case a lot. With the supplied thermal pad it works as intended. Desktop watching youtube it stays now at 54.0' C (22.0 'C ambient temperature).

LTolledo
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Re: HOT Raspberry Pi 4 - 4GB

Fri Nov 22, 2019 10:03 pm

my solution to the problem
(note: someone might find the image offensive) :mrgreen:
RPi4B-4G_Armorcase-open.jpg
RPi4B-4G_Armorcase-open.jpg (200.56 KiB) Viewed 2576 times
RPi4B-4G_Armorcase.jpg
RPi4B-4G_Armorcase.jpg (195.05 KiB) Viewed 2576 times
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Re: HOT Raspberry Pi 4 - 4GB

Sat Nov 23, 2019 12:26 am

I wasn't particularly impressed with the Pi4 Flirc case, but I must admit that it does work.
Probably not as well as it could and in hindsight I could have bought a much better cooling solution for less money.

I'd still recommend it, but indeed its poorly made and designed.
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bmendon
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Re: HOT Raspberry Pi 4 - 4GB

Sat Nov 23, 2019 2:04 am

The best solution is the GeeekPi Raspberry Pi Cooling Fan, Raspberry Pi ICE Tower Cooler, RGB Cooling Fan with Raspberry Pi Heatsink for Raspberry Pi 4 Model B & Raspberry Pi 3B+ & Raspberry Pi 3 Model B. It keeps my pi4 comfortable in the 28 to 32c. range. I found mine thru Amazon. I have seen them on Pi reseller sites. Finding a case will be a problem but I am using the included open-air case.

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HawaiianPi
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Re: HOT Raspberry Pi 4 - 4GB - not so good Flirc case

Sat Nov 23, 2019 2:42 am

SyncBerry wrote:
Wed Nov 20, 2019 6:08 pm
I posted a disappointed buyer review for this case at pihut but they didn't publish it.
{snip FUD, FUD and more FUD...}
You're not cooling a 150W TDP intel chip. Just an ARM SoC that runs on less than 10W of energy. The Flirc works fine. Did you even try it?

Could they have made it better? Sure, for a much higher price, and it wouldn't have been worth it for most. The Flirc keeps the Pi4 below throttling temperature, and that's what's important.

If you want massive cooling for maximum overclocking then get that Raspberry Pi Ice Tower cooler, or rig something up yourself. But don't go posting nonsense about the Flirc being defective, because it works as intended.
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alphanumeric
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Re: HOT Raspberry Pi 4 - 4GB

Sat Nov 23, 2019 8:38 pm

My Pi 4B is in a Pimoroni Pibow Coupe case. It has cutouts in the top for good cooling. On top of that I have one of their Fan Shims. With the latest Pi 4 eprom boot code updates I see temps right around 35c under moderate load with the fan running. Works for me. The Fan Shim has adjustable on off temperature trip points.

https://shop.pimoroni.com/products/fan-shim

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Imperf3kt
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 8:53 am

Well now, that was anticlimactic...

I bought a Pi4b 2GB a few months ago and stuck it in a Flirc Pi4 case. Wasn't overly impressed with the Flirc case but it kept temperatures while watching YouTube around 68°C.

Today I was fiddling with my uncased Pi4b 4GB, literally trying to fry an egg (don't ask) and, well... I'm unable to push it beyond 66-67°C running at full speed while cpuburn does its thing for over ten minutes so far.
Infact, the official Pi4 power supply feels hotter than the Pi does :(

Before actually frying an egg, I did a test with water.
In order to heat the water I placed a 25mm*25mm cube of aluminium precariously balanced on the SOC heatspreader with an aluminium Pie casing with 10mm of water inside.

I'm absolutely devestated, my eggs will never be ready at this rate!
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deepo
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 9:45 am

Christopher Barnatt has made a few videos on how to cool the RPi 4 on his YouTube channel Explaining Computers.
The latest is on passive cooling:
https://www.youtube.com/watch?v=VJC6OpGpq0Y

Active cooling is better, but takes up a lot more space that the passive solutions.

/Mogens

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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 10:03 am

Imperf3kt wrote:
Sat Nov 23, 2019 12:26 am
I wasn't particularly impressed with the Pi4 Flirc case, but I must admit that it does work.
Probably not as well as it could and in hindsight I could have bought a much better cooling solution for less money.

I'd still recommend it, but indeed its poorly made and designed.
Odd, got one here, and I don't think it's poorly made* OR badly designed. I like it.

Aluminium casting is clean, straight and burr free, plastic parts are clean straight and burr free, everything fits together as expected.
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 12:04 pm

Imperf3kt wrote:
Mon Nov 25, 2019 8:53 am
I'm absolutely devestated, my eggs will never be ready at this rate!
You could always go back to the old firmware. ;)
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

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Imperf3kt
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 8:17 pm

jamesh wrote:
Mon Nov 25, 2019 10:03 am
Odd, got one here, and I don't think it's poorly made* OR badly designed. I like it.

Aluminium casting is clean, straight and burr free, plastic parts are clean straight and burr free, everything fits together as expected.
I must have been unlucky :P
Mine has a big circular ring shaped burr on the casting that's supposed to touch the SOC and the plastic rubber top is loose and doesn't fit very well. Same as this poster.
https://www.raspberrypi.org/forums/view ... 3#p1569116

But I didn't come here to complain, (already did that when I received my Flirc case) my previous post was merely an attempt to point out that the Pi4 doesn't get as hot as some people are lead to believe. And that it won't cook my eggs as a result.

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LTolledo
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 9:05 pm

the FLIRC case is my preferred case from November to April..... as it also serves as "hand warmer" when I use the RPi encased in it. :D
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 9:35 pm

I improved the heat transfer with 18*18*1.5mm thick piece of copper (must be perfect plane, don't bend or result will be worse than with the thermal pad) cut in the heatsink of a dead passive GT6600, with thermal compound on both faces. Soon, with plastic top cover removed, I'll attach with 4+ screws a big piece of heatsink 63*90mm or so cpu heatsink with thermal grease... and maybe I'll fill the big hole with soldering tin SnPb. I love passive cooling.

echmain
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Re: HOT Raspberry Pi 4 - 4GB

Mon Nov 25, 2019 11:19 pm

deepo wrote:
Mon Nov 25, 2019 9:45 am
Christopher Barnatt has made a few videos on how to cool the RPi 4 on his YouTube channel Explaining Computers.
The latest is on passive cooling:
https://www.youtube.com/watch?v=VJC6OpGpq0Y

Active cooling is better, but takes up a lot more space that the passive solutions.

/Mogens

This is a pretty nice demonstration.

The fans still outperform the heat sinks but the heat sink results are still well below any throttling.

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SyncBerry
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Re: HOT Raspberry Pi 4 - 4GB

Mon Dec 23, 2019 11:42 am

Cold Raspi : thermal grease, passive heatsink & the piece of copper I talked above. I also filled the grinding hole above the CPU with a multilayer sandwich of thin aluminium paper and thermal grease.
The stress test is:
while true; do vcgencmd measure_clock arm; vcgencmd measure_temp; sleep 10; done& stress -c 4 -t 900s
Attachments
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fruitoftheloom
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Re: HOT Raspberry Pi 4 - 4GB

Mon Dec 23, 2019 12:01 pm

Standing the RPi on its side and running a fully updated Raspbian Buster OS, appears to lower temps:

https://www.seeedstudio.com/blog/2019/1 ... than-ever/
Rather than negativity think outside the box !
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