From: jj@franjam.org.uk   
      
   On 2024-04-14, druck  wrote:   
   > On 10/04/2024 10:22, The Natural Philosopher wrote:   
   >> On 09/04/2024 22:19, Adrian wrote:   
   >>> 40 was probably a one off (heat wave), but mid 30s occur every summer   
   >>> month.   
   >>>   
   >>> I've been looking at fan cases, but they all seem to prevent the use   
   >>> of the HAT, which means I won't be able to find out what the ambient   
   >>> temperature is.?? I suppose I could design one of my own   
   >>   
   >> Seriously, you don't need a fan.   
   >>   
   >> Just a *ventilated* case.   
   >>   
   >> I am designing a case for mine right now, featuring a complete grille in   
   >> one end wall.   
   >>   
   >> Experience shows that as long as hot air can escape and draw in cooler   
   >> air, all will be well   
   >   
   >   
   > The Pi 4B will definitely throttle with only a ventilated case if it is   
   > anything other than sitting idle all the time.   
   >   
   > I don't see the point of letting it throttling when an inexpensive fan   
   > will keep it at full speed under any load.   
      
   I use this passive heatsink on my pi4s   
      
     https://thepihut.com/products/aluminium-armour-heatsink-case-f   
   r-raspberry-pi-4   
      
   But it there are not in cases otherwise.   
   Did some tests ages ago and it never throttled.   
      
   p.s. disclaimer - no relationship to pihut except as a satisfied customer.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)