hitsware
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Best performance sans heatsinks ?

Mon Aug 20, 2018 12:15 am

3-B or 3-B+

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HawaiianPi
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Re: Best performance sans heatsinks ?

Mon Aug 20, 2018 1:34 am

The newer 3B+ definitely.

The system board and SoC were redesigned to better control thermals. For maximum performance with a fully loaded system a heatsink may still be required, but the 3B+ should always outperform the older 3B, regardless.

I run most of my Pi3B(+) computers in Flirc Gen2 aluminum alloy cases that also act as huge heatsinks.
Image
They look cool, and keep my Pi3B(+) running cool, without the noise, dust and additional power requirements of fans.
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hitsware
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Re: Best performance sans heatsinks ?

Mon Aug 20, 2018 4:13 pm

Thank You !
I got one of those cases for my wife's Pi.
(modified to put the SDC on top in front)
It is still slightly awkward to change.
O.K. for hers, but since I constantly change
mine I prefer bare.

jahboater
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Re: Best performance sans heatsinks ?

Mon Aug 20, 2018 4:55 pm

hitsware wrote:
Mon Aug 20, 2018 4:13 pm
O.K. for hers, but since I constantly change
mine I prefer bare.
For you then, try one of these:
https://www.amazon.co.uk/Kintaro-Alumin ... o+heatsink
Very effective.

For use without a heat sink, take a look at these thermal images for the two models:
https://medium.com/@ghalfacree/benchmar ... 122cf3d806

The new 3B+ has many advantages as well as clever heat management.
Forget the old 3B.

hitsware
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Re: Best performance sans heatsinks ?

Mon Aug 20, 2018 6:24 pm

That is a nifty looking heatsink.
I'll just leave mine as is.
One of the first things I admired about
the RPi's is the ability to run without
a sink. (compared to comparable Intel types)
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HawaiianPi
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Re: Best performance sans heatsinks ?

Tue Aug 21, 2018 1:43 am

hitsware wrote:
Mon Aug 20, 2018 4:13 pm
Thank You !
I got one of those cases for my wife's Pi.
(modified to put the SDC on top in front)
It is still slightly awkward to change.
O.K. for hers, but since I constantly change
mine I prefer bare.
The older Pi3B really does need a heatsink. The newer 3B+ has better thermal management, but if you run it hard you can still hit temperatures that will throttle performance. While I really like the Flirc Gen2 case, that Kintaro heatsink is tempting... 8-)

If you're having trouble changing the micro-SD card in a Flirc case, you might have the first generation version made for the older B+ and Pi2B (which had push to eject micro SD card slots). The newer 2nd generation Flirc is specifically designed for the Pi3B/3B+ models (with a cutout under the card slot), and changing the micro-SD card is easy (you can also see the power and activity LED indicators).

The only real drawback to the Flirc case is that GPIO connections are not very accessible. There is a slot to pass GPIO wires out of the case, but it's not easy to swap connections. For that reason I do have one Pi3 in an open style JBTek case (easy access to the board and all connectors).
Image

If you like the bare board look of the Pi, but want a bit of protection, the JBTek case is cheap and works well. The fan is a bit noisy, but because the case is open to room air you may not need it. And best of all, it doesn't hide the beauty of your Pi's PCB (I like the bare look too).

And finally, a solution to difficulty swapping micro SD cards is not to use one and boot from USB. The system pictured above boots from a SATA III SSD with a USB3-SATA3 adapter cable. I do leave an empty FAT32 micro SD card in the slot to reduce boot time and system overhead from polling an empty card slot, but I can easily boot something else by unplugging one USB drive and plugging in another.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
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hitsware
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Re: Best performance sans heatsinks ?

Tue Aug 21, 2018 3:05 am

Ya Mon ! ...................... Steam Punk Pi ............. :lol:

Does the Pi have a overtemp indicator
( like the lightning bolt for undervoltage ) ?
I saw a little thermometer yesterday,
but not since .

fruitoftheloom
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Re: Best performance sans heatsinks ?

Tue Aug 21, 2018 5:02 am

hitsware wrote:
Tue Aug 21, 2018 3:05 am
Ya Mon ! ...................... Steam Punk Pi ............. :lol:

Does the Pi have a overtemp indicator
( like the lightning bolt for undervoltage ) ?
I saw a little thermometer yesterday,
but not since .

https://www.raspberrypi.org/documentati ... g-icons.md
Retired disgracefully.....

jahboater
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Joined: Wed Feb 04, 2015 6:38 pm

Re: Best performance sans heatsinks ?

Tue Aug 21, 2018 7:17 am

hitsware wrote:
Mon Aug 20, 2018 6:24 pm
One of the first things I admired about
the RPi's is the ability to run without
a sink. (compared to comparable Intel types)
Yes, though I would say "ability to run without a fan".
With or without a heat sink, it is silent and should last for decades - wonderful!

Yours is upside down by the way - might be *slightly* better with the SoC on top.

The best cooling is with the board on edge. True with or without a heat sink.
And any heat sink should be mounted with fins aligned vertically.
All to promote the best convection airflow.

By the way, heat sinks are used to improve performance, not to protect the SoC from over heating.

hitsware
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Re: Best performance sans heatsinks ?

Tue Aug 21, 2018 4:17 pm

> Yours is upside down by the way .

Super easy card access..........
Only the 1 ' thermometer ' moment ...........
3 B + ............ Never had 1 with 3 B ( couple of years ) ?

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