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REPLYADDR Pancho.Jones@proton.me
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REPLY:  aece66b2
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On 12/7/24 14:50, The Natural Philosopher wrote:
> On 07/12/2024 12:31, Pancho wrote:
>> On 12/7/24 11:54, The Natural Philosopher wrote:
>>> On 06/12/2024 14:53, s|b wrote:
>>>> On Thu, 5 Dec 2024 07:48:59 +0000, The Natural Philosopher wrote:
>>>>
>>>>>> Tnx for the follow-up. According to the shop I could just snip the
>>>>>> green
>>>>>> wire, so I've done that. I've set it to run at 60°C and the fan's not
>>>>>> turning (CPU temperature is 48°C).
>>>>> My Pi 4B runs about that with no fan
>>>>
>>>> That's what I'm saying: it's 48°C when the fan is not running. Software
>>>> only allows to set a minimum temperature of 60°C before the fan starts
>>>> running, so I unchecked the setting and now the fan is turning all the
>>>> time. A fan with only 2 cables (red & black) should have been enough. I
>>>> don't know if there's a way to set that minimum temperature to 40°C...
>>>>
>>>> But yes, it's not really necessary and  I shouldn't have bought it. But
>>>> it was fun setting it up. I use RPi4 for Pi-Hole and PiVPN. I've played
>>>> a little with RetroPie, so maybe I'll give that another go, because I
>>>> have two RPi4 now.
>>>>
>>>> I used a Pimoroni Heatsink Case for the first one I bought:
>>>> >>> raspberry-pi-4?variant=29430673178707>
>>>>
>>>> Temperature is around 40°C.
>>>>
>>>> The Unity V2 comes with a fan:
>>>> >>> search=unity>
>>>>
>>>> Temperature is between 30° and 35°C. (There's a real peak when I open
>>>> Fx.)
>>>>
>>>
>>> It's an interesting thought as to why one would use a fan at all. If
>>> its such a high compute task that you need one, maybe a bigger Pi or
>>> an Intel based machine is indicated.
>>>
>>
>> Heat is often about continuous utilisation, like CCTV. On my Pi4 I have
>> a heavy aluminium case that serves as a heat sink, it is fine without
>> a fan.
>>
>> On my Pi5, I use the official active cooler heat sink, which has a
>> fan. But a good fan, in that it only comes on during the hottest days
>> of summer.
>>
>> In a moment of stupidity I also bought a metal case for the Pi5 which
>> messes up my USB keyboard/mouse dongle (reflection?), I haven't
>> checked to see what it does to Bluetooth and WiFi.
>>
>>> I dislike fans. They fail.
>>>
>> They do, but they normally last for years.
>>
>
> Not IME
>
> Repaired several computers with failed fans. If you were lucky the fan
> itself just needed replacing, If you were unlucky it took the processor
> with it.
>
> The trouble is the environment in which they run. In a clean machine
> room, OK. In an office full of people some of whom must have had pets
> and some of whom smoked, it could be  a very common failure...
>

Does your experience come from this millennium?

I remember that type of thing happening, but it was a long time ago.
Modern fans are good, I have CPU fans still running after 10 + years.
Stunning reliability.

Plus, CPUs shut down without a running fan, and have thermal shutdown too.

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