When I'm watching videos or browsing the web or in a meeting on my Chromebook, the CPU temp goes to 158 degrees..
Is that good for a CPU? The Chromebook has NO vents or breathing space.. because Google wants it to be 'quiet'
definitely not "good" for a CPU, but not quite high enough to cause physical damage.
if there's no fans to ramp up the RPMs on;
you can either underclock the CPU or alter power settings to use a lower % of the CPU's possible speed.
why not check the manufacturer forums for users commenting on this particular model.
possibly it's a known issue others have found a solution for.
if not a reported problem; contact support directly and ask them.
70C is perfectly normal for electronics. In a chromebook/ultrabook actually very good. 90C would be considered normal there.
TJmax temperature is often 100C, 105C, or higher depending on the component. But general rules of thumb for most integrated circuits (CPUs, GPUs, APUs, SoCs) don't go over 90C. Modern electronics will control their own power output to protect themselves, not really anything to worry about unless the active cooling (where applicable) has failed.
Sounds about right for a lightweight system with passive cooling; my laptop hits 60+ pretty easily with complete passive cooling. Typical workload for my laptop is the usual documents work and browsing Youtube. Sometimes I do have Zoom or Microsoft Teams running as well.
Yeah this is on Windows, but at the hardware utilization level it won't make much difference. A load is a load.
I think you are good.
The processor has a thermal design power of 5w which is tiny.
The T junction max it 95c.
I imagine the laptop depends on heat rising to get rid of generated heat.
Just keep your intake and exhaust airways clear.