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When I watch a YouTube video at 340p with audio on my Raspberry Pi 3B, it gets over 80C without a heat sink. I have an Apple 12W 5.2V ~ 2.4A as my PSU if anyone would ask.

Is this normal or should I be concerned?

  • Comments are not for extended discussion; this conversation has been moved to chat. – Ghanima Dec 30 '16 at 23:03
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Based on the temperatures and CPU usage you shared in the chat, I believe that what you are experiencing is normal as reviving video over the internet and deciding it is very taxing on it. However a CPU cooler isn't exactly a necessity as the Pi will simply slow itself down to prevent it from over heating. But if you want to watch YouTube in a higher quality or have background tasks running while watching YouTube then I would recommend a heat sync and maybe a fan to prevent thermal throttling.

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