The longer you hold your finger on the processor, the hotter the your
finger gets. It should run right around 50 C when running at 1GHz.
Beaglebone white default was 750MHz.

Gerald



On Sat, May 31, 2014 at 8:00 PM, John Syn <john3...@gmail.com> wrote:

>
> From: Eric Fort <eric.f...@gmail.com>
> Reply-To: <beagleboard@googlegroups.com>
> Date: Saturday, May 31, 2014 at 2:54 PM
> To: beagleboard <beagleboard@googlegroups.com>
> Subject: [beagleboard] how hot does the processor on your beaglebone
> black get? How hot should it get?
>
> I've had some issues recently with my beagle bone black going stupid,
> dropping from the network and at times being flaky and unresponsive.  when
> I picked up the board it felt substantially warmer than my beaglebone
> white.  Both are running on 5VDC input power (measured at 5.00V with a
> VOM).  the processor on the Beaglebone White I can place my finger on top
> of and leave it there indefinitely.  The processor on the Beaglebone Black,
> is hot enough that after 5-10 seconds I can no longer hold my finger on
> it.  Is this normal?  How long can you hold your finger on the processor of
> your Beaglebone Black before it becomes uncomfortably warm?  Please nobody
> try this to the point of burning your (or someone else's) fingers.
>
> It depends on the CPU frequency and CPU load. If you are running at 1GHz
> and near 100% CPU load, then the processor gets quite hot (5-10 seconds is
> about right). If your CPU load is low, then this is not normal. At 300MHz
> and less than 10% CPU load, the CPU should be just warm.
>
> Regards,
> John
>
>
>
> Eric
>
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