On Mon, 24 Jun 2019 14:11:54 +0000, Don Kuenz wrote:

> cross posted to comp.sys.raspberry-pi
>
> Jan Panteltje  wrote:
>> On a sunny day (24 Jun 2019 03:01:11 -0700) it happened Winfield Hill
>>  wrote in :
>>
>>>Jan Panteltje wrote...
>>>>
>>>> New Raspberry Pi 4 quadcore presented today:
>>>>  https://www.raspberrypi.org/products/raspberry-pi-4-model-b/
>>>>
>>>> USB3, gigabit ethernet, micro HDMI dual display 4K, WiFi, bluetooth.
>>>>  H264 and H265 hardware decode, 40 pin GPIO,
>>>> 1, 2, or 4 GB RAM,.  5V 3 A supply.
>>>>
>>>> Only minus I see is that the power consumption goes up and up with
>>>> each model, my old 1 core raspi only needs 300 mA :-(
>>>
>>> I noticed the pics don't show a heatsink on the processor,
>>> will that have to be an awkward 3rd-party add-on?  Maybe a heatsink
>>> with a small fan?  Is there a fan connector?
>>>
>> Good question,
>> here they sell a case with build in fan
>>  https://www.kiwi-electronics.nl/unity-case-for-raspberry-pi-4-with-
fan-transparent
>> I take it that it is always on.
>>
>> What I find peculiar is that the specs say 0-50 °C,
>> so not below zero?
>>
>> I will likely order one, as the idea of 2 displays seems cool.
>
> Is a cooler mandatory? The GPIO block contains power pins able to
> theoretically power a fan.
>
The write-up in The Register:
https://www.theregister.co.uk/2019/06/24/raspberry_pi_4_model_b/


Says it isn't needed for light loading, but suggests you should fit one
for heavy computing loads. It seems that the Pi 4 is capable of strong
enough self-throttling to avoid damage, but that this will impact its
throughput.

A look at pics of the Pi 4 would seem to suggest that fitting a decent
sized heatsink may prevent expansion boards being fitted and/or
drastically interfere with the airflow over the heatsink if a low profile
one is fitted under the expansion board, but The Register doesn't make
any comments about this.

The various connectors on the main board have either been replaced by
smaller ones or moved, so existing cases will either be unsuitable for
the Pi 4 or will require some hacking to gice access to some connectors.


--
Martin    | martin at
Gregorie  | gregorie dot org

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