Cooling

in Peripherals
Are there pictures of the UPs heatspreader?
The pictures in the shop only show the CPU blank, which explains why UP had heat problems. So how where they solved?
The pictures in the shop only show the CPU blank, which explains why UP had heat problems. So how where they solved?
Comments
GPU not tested, uses a bit more energy
At this moment, CPU drop to 480MHz when it starts throttling ( it means when CPU temperature reaches 90C, the CPU frequency starts going down to 480MHz until CPU temperature reduces to 80C, then CPU frequency starts going up again); our goal is to set CPU at 1GHz above during throttling ( no specific time plan yet).
You can refer below for our test condition:
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1. room temperature at 25 C
2. Use Burn-in test program V8.1 for board stress, and HW Monitor program for status checking
3. Test condition and setting in burn-in program http://i.imgur.com/nBZROzO.png
4. Run 48 hrs non-stop and monitor CPU core temperature and frequency by HW monitor program
5. Generate report
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We will soon upload 3D file of UP board+ current 8mm heatsink in community; and we will phase in new heatsink once we find a way to keep it at 1GHz above during throttling. Basically it should not impact your chassis design, because our goal is the heatsink height should be always lower than than USB connector.
If you want to expereince no-throttling at all, we now sell active cooler ( heatsink with fan) at UP shop. By our experience, this fan is really quiet.
It could work on the LatePanda, too, depending on size and that one needs some sort of cooling.
the 5V can be used for power applicatons as it is connected to AC/DC adapter so if you need more current, just change the adapter to value > 4A
Note: there is a specific connector for the FAN-pwr/ctrl so you dont need to use 40-GP connector to power the FAN; but for that you need to use UP-official/verified version.
Also, I find the 'i7z' utility useful for monitoring CPU core frequencies and temperatures during performance testing
The UP Board SoC does not support extended temperature range.
While on UP Squared there will be the Atom SKU (delayed by Intel SoC availability until now) which should support extended temperature range.