That second part was indeed pretty self evident years ago, but I regularly watch 4k content on YouTube on low powered machine these days and can't say I see the difference anymore.

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happytoexplain 5 hours ago | parent | next [-]

I'm not saying it's FF's fault, but it undeniably runs worse on my machine.

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flir 5 hours ago | parent | prev [-]

You might still in a power usage graph.

	▲	folkrav 4 hours ago \| parent [-]
		Eh, maybe, maybe not. I watch YouTube content, not power usage graphs, perceived performance is good enough for what I do with it. If I'm on battery I'm probably not watching in 4k anyway, at which point the difference in power use should be pretty negligible.