Author Topic: Nice cooler for your Pi 4!  (Read 1570 times)

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Online SiliconWizardTopic starter

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Online wraper

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Re: Nice cooler for your Pi 4!
« Reply #1 on: February 08, 2023, 07:01:27 pm »
 

Online SiliconWizardTopic starter

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Re: Nice cooler for your Pi 4!
« Reply #2 on: February 08, 2023, 07:38:06 pm »
Can't wait for a miniature liquid cooler for the Pi 4 too!
 

Offline elagergren

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Re: Nice cooler for your Pi 4!
« Reply #3 on: March 17, 2023, 08:20:58 am »
I have a couple of those. They're great, but also a little overkill. My Pis with that fan idle at ~30 C and even under load (multi-core stress test) they don't reach 40 C. Meanwhile, my Pis with more regular fans idle at ~45 C and a stress test brings them to over ~55 C.

My only complaint is that my fans have these glowing lights that you can't disable. :(
 

Online SiliconWizardTopic starter

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Re: Nice cooler for your Pi 4!
« Reply #4 on: March 17, 2023, 07:53:24 pm »
I don't doubt they work fine, but yes clearly they look overkill.
It's also my experience that the CPU doesn't get over 55°C or so with a reasonable (not big) heatsink, with no fan even, just passive.
Maybe if you overclock your Pi4 can it have any benefit.

But while 40°C vs 55°C looks nice on paper, it doesn't make any difference whatsoever. 55°C is just tickling it. You start needing better cooling when you reach temps > 80°C as they'll reduce CPU lifetime somewhat or can make the CPU throttle or even shut off.
 

Offline elagergren

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Re: Nice cooler for your Pi 4!
« Reply #5 on: March 17, 2023, 08:56:47 pm »
Yeah, there's basically practical benefit, other than it looking cool (if that's your thing). I actually overclocked one a while back (without a fancy fan) and ran it inside a structured media enclosure. Never got warm enough that I was worried about it.
 

Offline yovenim

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Re: Nice cooler for your Pi 4!
« Reply #6 on: June 25, 2023, 11:29:09 pm »
I have a couple of those. They're great, but also a little overkill. My Pis with that fan idle at ~30 C and even under load (multi-core stress test) they don't reach 40 C electric coolers. Meanwhile, my Pis with more regular fans idle at ~45 C and a stress test brings them to over ~55 C.

My only complaint is that my fans have these glowing lights that you can't disable. :(
does anyone know of a really nice electric cooler I could gt for my Prius? Not too large and not a fridge, just a cooler. Thanks
 

Offline radiolistener

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Re: Nice cooler for your Pi 4!
« Reply #7 on: February 11, 2024, 08:06:47 am »
for those who are interested, I get this CNC metal shell for RPI4:
https://www.aliexpress.com/item/4001309643679.html

It looks very cool and small.
RPI4 running at arm_freq=2100 and gpu_freq=700 keep temperature at about 40-50 °C with usual load.

Here is a small test with stress -c 4 (continuous full CPU load):
05 min = 52°C
10 min = 57°C
15 min = 61°C
20 min = 63°C
25 min = 64°C
30 min = 67°C

It don't exceed throttling with no fan.

The only con is that WiFi signals are reduced for 20 dB and it don't see access points with weak signals on a long distance.
The speedtest.net shows that the speed drops down from 43 Mbps to 20 Mbps when connected to nearby WiFi router.

PS: When I put a little passive heatsink from an old 1990's ~20W CPU (60x55x50mm with no thermo-interface just touch) on the top of this metal shell it keeps temperature below 50°C even with high CPU load
« Last Edit: February 11, 2024, 07:21:51 pm by radiolistener »
 


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