[arm-allstar] Pi4B Release

[Doug Crompton]

Power is based on speed and there is no reason to run it at full speed in a
typical Allstar server.  The same is true for the 3B+.  You have control
over processor speed and in the default non-turbo on-demand mode it
switches to a higher speed as needed. I suspect you could limit the maximum
(higher) speed on a simple one radio server and just a few connections to a
lower setting. We will see how the 4B plays. Maybe there could be several
CPU speed settings that could be offered. Even if the Pi drew 3A
continuously, which it doesn't, it would only consume 15 watts. Typically
the average current draw is well under 1 amp. The problem is the heat is
generated over a small area and possibly a better or larger heatsink plus a
fan is required for higher speed use.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*


On Mon, Jun 24, 2019 at 4:51 PM "Tony Ross via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> A 3A power supply requirement and the heat generated in the thermal
> images seems even more of an absurdity than the 3B+.
>
> On 6/24/19 8:38 AM, "Doug Crompton via ARM-allstar" wrote:
> > The Pi4B has been released and may be available in limited quantities at
> > retailers soon. This is a tremendous step up in performance and features
> > BUT for the average Pi user running Allstar there is no need to update to
> > this board and at the moment it is not supported by hamvoip software.
> > Support of this board will require a kernel update which will be
> available
> > in the future. Primary uses for this new board would be in desktop
> > applications. I suspect the Pi3B+ will be available for quite awhile and
> > maybe even at discounted prices once the 4B is widely available. For more
> > information on the Pi4B see these links -
> >
> > https://www.tomshardware.com/reviews/raspberry-pi-4-b,6193.html
> >
> >
> https://arstechnica.com/gadgets/2019/06/faster-raspberry-pi-4-promises-desktop-class-performance/
> >
> >
> > *73 Doug*
> >
> > *WA3DSP*
> >
> > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> > _______________________________________________
> >
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> > ARM-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> >
>
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