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Heat

Posted: Thu Aug 23, 2012 3:10 pm
by bobc47
I should be getting my pi in a week or so (ordered from Newark in early August). I came across this method of heatsinking the chips and thought some might find it interesting.

http://www.michaeldornisch.com/2012/06/ ... -sink.html

Bob

Re: Heat

Posted: Thu Aug 23, 2012 3:25 pm
by RaTTuS

Re: Heat

Posted: Thu Aug 23, 2012 8:48 pm
by Ed Raket
RaTTuS wrote:http://twitpic.com/a1sogy
http://twitpic.com/agi2kq
my copper ones look better
I just ordered these from ebay... they make the Pi look kind of chique 8-)

Re: Heat

Posted: Thu Aug 23, 2012 10:16 pm
by ejsolutions
I got two copper ones from a seller in China (about 10 days to arrive) for the princely sum of £2. :D
They look cool but run pretty hot, so they must be doing something. 8-)
Just need to get around to cutting down a low profile black aluminium heat sink for the LAN enclosure - I've got a few spare ones lying around, so may as well make use of one.

Re: Heat

Posted: Fri Aug 24, 2012 8:30 am
by Wendo
The problem with all these heatsink with regards to the broadcom chip is this. You're not connecting the heatsink to the broadcom chip, you're connecting it to the RAM mounted on top of it. I'm doubtful you're doing any meaningful cooling to the broadcom chip.

Of course, the LAN/USB chip gets really hot, and cooling that is probably not a bad idea :)

Re: Heat

Posted: Fri Aug 24, 2012 12:28 pm
by ejsolutions
Wendo wrote:... You're not connecting the heatsink to the broadcom chip, you're connecting it to the RAM mounted on top of it. I'm doubtful you're doing any meaningful cooling to the broadcom chip.
I beg to differ, given the proximity of CPU/RAM. Extracting the heat from the RAM must logically cause a temperature differential, for the CPU heat to go some place. Simplistically, the heat from the CPU has to go somewhere: CPU-->heat-->RAM-->heat-->air/cooler.

Re: Heat

Posted: Fri Aug 24, 2012 8:47 pm
by Ed Raket
ejsolutions wrote:
Wendo wrote:... You're not connecting the heatsink to the broadcom chip, you're connecting it to the RAM mounted on top of it. I'm doubtful you're doing any meaningful cooling to the broadcom chip.
I beg to differ, given the proximity of CPU/RAM. Extracting the heat from the RAM must logically cause a temperature differential, for the CPU heat to go some place. Simplistically, the heat from the CPU has to go somewhere: CPU-->heat-->RAM-->heat-->air/cooler.
And if it does'nt..... it still looks kind'a chique ;)