Heat-sink as add-on?

[patrickhwood]

at what temperature can the pine64 reach in a four core synthetic stress test (Prime)?
For comparison, Raspberry Pi3 (Quad ARM Cortex A53 1.2 GHz) reached 80-100 deg C.
http://www.zdnet.com/article/no-your-ras...s-creator/
probably similar due to the same architecture?

Read this: http://forum.odroid.com/viewtopic.php?f=...58#p127223

Thermal throttling kicks in way before the A64 hits 80C, and gets more aggressive as the temperature gets higher.  The only way to go above 80C is to disable it.