Got an old Android phone you don’t use anymore kicking about in a drawer somewhere? Then you can put it to productive use as a PC system monitor which shows the current level of stress your processor and graphics card are under due to the game you’re currently playing.

System monitoring tools are, of course, nothing new, and there’s no shortage of PC software that can display a readout of your CPU and GPU temperatures, to show how hard these components are working (or indeed other system stats like how fast fans are spinning).

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