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From: Chris Townley <news@cct-net.co.uk>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: What do I need to go with a Pi 4
Date: Wed, 10 Apr 2024 00:02:18 +0100
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On 09/04/2024 21:40, druck wrote:
> On 09/04/2024 13:52, Adrian wrote:
>> Apart from the Pi4, to upgrade, I know that I will need a bigger power 
>> supply and a HDMI adapter lead, but after, things are a bit vague.  
>> Can I get away with the Pi4 without any additional cooling, or do I 
>> need a heat sink or fan, and if so, how do they get on with the hat ?  
>> The space it is in has had a temperature range of -1 to 40 degrees C, 
>> the mean across that time is about 15.5C.
> 
> 40C is quite a high ambient temperature. If you are going to run the Pi 
> 4B hard with the likes of matplotlib, passive cooling my not be enough 
> to stop it throttling. One of mine has a large heat sink case with no 
> fan and never goes over 60C, but that's at a 20C ambient. For 40C 
> ambient, I would recommend a fan case, go for a 40mm fan if you want it 
> to be quiet, 30mm ones can be noisy.
> 
> ---druck
> 

On Pi4 I use the Argon ONE V2 case - good case with sensible fan. I have 
a V3 for the Pi5, excellent with their M2 bottom. Both available from 
the Pi Hut UK

-- 
Chris