I'm currently creating an animation in Blender (approx. 10 seconds) which will take around 1.5 hours to render per frame. That's why I want to render each frame separately and later cut it into a video.
Now the question: Can laptops overheat dangerously? I plan to render the animation when I'm not at home and of course I don't want anything to happen…
With test renders, the laptop gets really hot, so you almost burn yourself. Can anything happen there or is there a kind of "protection" that the system simply switches off if it overheats?
(During these 1.5 hours both CPU and GPU will be almost 100% busy)
If the CPU / GPU get too hot (and I don't mean that they go from -30 ° C to 100 ° C in a second), automatic protection mechanisms are activated that either clock the component down or switch it off completely.
Can laptops overheat dangerously?
depends on what you define as dangerous. As long as there's no defect in your laptop, he will not be able to torch the house for you. But it can overheat, then it would switch itself off to prevent damage.
or is there a kind of "protection" that the system simply switches off if it overheats?
first the computer starts clocking down the CPU / GPU in order to generate less heat.
If that's not enough, the computer turns itself off.
Many modern CPUs even survive without a cooler.
The laptops throttle the speed from a certain temperature to protect the processor, but it can't be so healthy for the components to run hot constantly. Remedy here is a "laptop cooler" for just under 30 euro from amazon, the laptop will not have a constant 30 ° now, the temperature only rises slowly and less (for me the temperatures have been pretty ok since then. Unfortunately, these things only make a few sounds, but your laptop is doing better.)
What graphics card?
If M stands in front of it, your Lapptop could try it out with the mobile cards. If the fan gets too hot, it doesn't turn anymore.
The temperature can shoot up so fast that the laptop melts and the booth burns.
If you have a card in the direction of 1080, he should probably make it.
80 degrees are normal there.
Is actually a laptop card, GTX 950M.
With very old hardware I do not know, it may well be that it is not yet as well secured as current hardware.
Basically, the CPU and GPU can get very hot, especially in notebooks 80 ° C or even around 90 ° C are not that rare.
However, this is not dangerous, it will only be from 100-110 ° C.
But it shouldn't even come to this, because current hardware has good protection mechanisms.
E.g. Is there a temperature limit above which the BIOS (and thus the rest) switches off to protect the hardware. Until then, the processors counteract this by clocking themselves down and thus reducing the temperature.
This has also been tested a few times by using desktop hardware completely without a cooler. The performance is extremely bad, but everything remains stable.
Of course, this does not work if there's not enough time, but you would have to warm up the CPU or GPU quite a bit from the outside.
In addition, you should not undermine the protective mechanisms, this is possible (useful for overclocking), but can be dangerous.
They are designed for these temperatures, as long as the fan runs normally there's no need to worry.
Almost all current CPUs "survive" without a cooler (emergency shutdown. The amazing thing about the 8700k was that it only clocked down so much heat that the emergency shutdown did not even work.
Such high temperatures do not harm the components.
The first thing that could be damaged would be e.g. The solder bumps. If they soften, CPU / GPU / etc. Lose contact, but "only" 100 ° C is not enough.
For example, Errors that lead to incorrect results or a crash, however, do no harm.
And I would actually only call this "laptop cooler" a marketing gimmick. It only cools the case and only a few degrees.
Additional fans do not work either, provided that the fans installed in the notebook still work and can suck in enough air.
Things like that are useful if you can use them to ensure that enough air can be sucked in, but two identical wedges and some glue are also sufficient.
So I guarantee that an older type of laptop flares up.
Problems are dust or fiber particles that block the air duct.
These interfere with the heat dissipation of the laptop gets hot in places where it should not get hot (usually the bearing of the fan)
The fan no longer turns and the whole thing quickly reaches 100 degrees and more.
This leads to melting and sometimes charring of the underlying surfaces and the device burns.
The switch-off does not apply in some cases because the temperature of the components is still cooled until the fan fails.
Another problem is use for more than 8 hours, the device can withstand this but is not designed for it (Asus can tell you a thing or two about this).
And last but not least, the good old short circuit due to overheating, in all laptops the rectifiers are cooled by the fan, which is why they usually sit just in front of the cooling fins, which tolerate a maximum of 60 degrees with a slight traffic jam, the temperature rises above the limit over time they break and if you are unlucky there's a nice 120 watt short circuit with a good amp and a nice flame.
Maybe with older notebooks, but who is still trying to render complex animations with a 15 year old (wild number) notebook?
The protective mechanisms mentioned have been around for a number of years.
The fan no longer turns and the whole thing quickly reaches 100 degrees and more.
The switch-off does not apply in some cases because the temperature of the components is still cooled until the fan fails.
That contradicts itself.
If the device gets so hot that e.g. Plastic melts, then the CPU or GPU inevitably has to be hotter inside, and it switches off pretty safely at over 100 ° C.
Even if the BIOS does not do this, the heat will damage the CPU / GPU, which in turn will cause them to stop working and of course cool down again.
But as I said, nothing has happened for a few years now.
IF something melts or burns, it is because of a defect, due to external influences or because the protective mechanisms have been actively avoided.
