Nice cooler for your Pi 4! - Page 1
Forum section: electronics / general

author: SiliconWizard
author_rank: Super Contributor
timestamp: February 08, 2023, 06:58:36 pm
content: https://thepihut.com/products/high-performance-cooler-with-pwm-fan-for-raspberry-pi-4?mc_cid=32622f0088

author: wraper
author_rank: Unknown
timestamp: February 08, 2023, 07:01:27 pm
content: And special enclosure to accept this nonsensehttps://thepihut.com/products/kksb-tall-aluminium-case-for-raspberry-pi-4

author: SiliconWizard
author_rank: Super Contributor
timestamp: February 08, 2023, 07:38:06 pm
content: Can't wait for a miniature liquid cooler for the Pi 4 too!

author: elagergren
author_rank: Unknown
timestamp: March 17, 2023, 08:20:58 am
content: 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.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 17, 2023, 07:53:24 pm
content: 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.

author: elagergren
author_rank: Unknown
timestamp: March 17, 2023, 08:56:47 pm
content: 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.

author: yovenim
author_rank: Newbie
timestamp: June 25, 2023, 11:29:09 pm
content: Quote from: elagergren on March 17, 2023, 08:20:58 amdoes 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

author: radiolistener
author_rank: Super Contributor
timestamp: February 11, 2024, 08:06:47 am
content: for those who are interested, I get this CNC metal shell for RPI4:https://www.aliexpress.com/item/4001309643679.htmlIt 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°C10 min = 57°C15 min = 61°C20 min = 63°C25 min = 64°C30 min = 67°CIt 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