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I've noticed when I am watching YouTube videos (via Iceweasel, if that matters) in 1080p (even when not in full screen) the Pi3 temp jumps to over 82 degrees celcius. I am using a 49" Samsung 4K TV as my display; could this be pushing the Pi3 to idle so high and begin to overheat when streaming YouTube videos?
I watched a video of someone testing their Pi3 running Quake 3. They did not use heatsinks in the beginning of the test. Running Quake 3 for extended periods of time only pushed the temp to 79 degrees C. I am not sure how to measure legacy graphics in a fps game vs. 1080 video on YouTube but those results peaked my interest. He got it down to 75 degrees C with a "cheap 1 dollar heatsink". I am using the heatsinks that came with the Pi3 Canakit (from Amazon) which did have some thermal paste included.
So my question is, does something seem off with my temperatures? I am tempted to remove the heatsinks and re-apply arctic silver but I'm afraid of damaging the unit somehow when attempting to remove the (possibly well-stuck) heatsinks from the chips.
Are there any popular cooling solutions for the Pi3 currently in circulation? Thanks for any help/advice/comments that can be provided