I used to overclock my xperia play to 1.8ghz stable.
Yep, and here's how that works: When you set your mobile device to a high clock rate, what you are actually changing is the
maximum speed your device is allowed to reach at peak usage. When you do something CPU-intensive, such as compiling a large program (say, Xorg), that device will reach the maximum clock rate you set it to, for as long as it can do so and remain at safe temperature. Once the temperature exceeds the safety limit (and without active cooling,
it will), the device will automatically clock down the CPU to bring the temperature down. Once the temperature is low enough, the device will bring the clock rate back up to the maximum you set it to again.
It will continue to go up and down like this until the compiling operation is complete.
Most of the time under normal usage you wont notice this, as when surfing the web and such, you only use the maximum clock speed for a few seconds at a time when loading a new page, which isn't long enough to heat the device enough to trigger the throttle. Compiling, benchmarking, and a few select other advanced operations can use the CPU at max for extended periods of time and trigger this throttling behavior, but most regular usage does not.
This is how all mobile devices that do not have active cooling (read: a fan) work.
So in the case of the Pyra, when Exophase says you will not be able to reach 1.5GHz for extended periods of time, he is
not saying you wont be able to
set the clock rate to 1.5GHz and have a stable device. Instead, I'm pretty sure he meant that, like all mobile devices, anything that maxes out the CPU for extended periods of time will trigger the throttling to keep the heat down.
How about a maximized liquid cooling system? Make the case bottom out of aluminum, tie it thermally to the SoC to act as a big heat sink/transport/radiator with the added advantage that it can transport heat to your hands - which gets pumped away by your circulatory system. Maximized liquid cooling.
Before the silly replies come in - not talking about 'insanely hot' here. By the time the heat would be distributed and transported to and through your skin it would max out in the 40*C range. Warm, but not going to singe or boil anything.
As a resident of Wisconsin (where it can get quite cold), I support this idea.
[doublepost=1510402220,1510401684][/doublepost]Any device made by an (ironically named) Evil Dragon should be able to produce much warmth.
I'm still awaiting the design that shares a USB port with a portable flame thrower. Call it "Dragon's Breath". That way my Pyra can be a pocket computer, a hand warmer, a cigarette lighter, a violence deterrent, and even more awesome to behold.
You could even use the butane chamber that the flame thrower is fed from as a backup power source, in a pinch.