Barely any at all. If you overclock them you'll wanna put a fan on them. I have a little USB powered fan. You can overclock them 300% and they're still stable as long as you have a little fan blowing on the heat sink.
That’s pretty cool! How big are they? Do they take a lot of space?
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Bigger than a thumb drive but still small. It's a single S19 chip on a board.
So not much space at all. Cool stuff!
