question about running a cpu without a heatsink

Ancient_2 · Dec 27, 2016

if i was to use a cpu with no heatsink just to see if it boots or not (about 20 seconds to 1 minute) would that damage the cpu at all?

Kavinqt · Dec 27, 2016

Why would you want to do this in the first place ;P

Kavinqt · Dec 27, 2016

a cpu can fry itself in seconds though so yeah don't do that.

Ancient_2 · Dec 27, 2016

Kavinqt :

I tried a new build cpu was drooped pins were unbent system didnt power on, i have another mobo for it wanna test to see if its dead (installing the heatsink sounds like a hassle in that tiny pre built case and im lazy)

Kavinqt · Dec 27, 2016

Ancient_2 :

Well, I would not recommend even attempting to turn on a pc for even a couple seconds without a heatsink on the cpu, most likely it will ruin it entirely just put the stock cooler on should take less than 5 mins to do so. bending CPU pins in no way kills a CPU so I doubt its dead. If you unbent them correctly everything should be fine unless its another problem entirely.

Ancient_2 · Dec 27, 2016

Kavinqt :

Ancient_2 :

Well, I would not recommend even attempting to turn on a pc for even a couple seconds without a heatsink on the cpu, most likely it will ruin it entirely just put the stock cooler on should take less than 5 mins to do so. bending CPU pins in no way kills a CPU so I doubt its dead. If you unbent them correctly everything should be fine unless its another problem entirely.

Yeah but dropping it from 5ft onto brick is gonna mess a lot up according to people on this forum (it was on a fireplace long story) but i guess ill put on the heatsink

Kavinqt · Dec 27, 2016

Ancient_2 :

Kavinqt :

Yeah but dropping it from 5ft onto brick is gonna mess a lot up according to people on this forum (it was on a fireplace long story) but i guess ill put on the heatsink

Yeah 5 ft can do some serious damage and probably did.. But you never know.

Solandri · Dec 27, 2016

Ancient_2 :

You don't have to use thermal paste on a heatsink for a short power-on test. Just place the heatsink on top of the CPU and strap it down (you don't even need to strap it down if you're really lazy). Most of the heat conductivity is via metal-on-metal contact, not through the thermal paste. The paste just improves the efficiency a little and drops the temps a bit more. So it'll run hotter than without paste, but it'll still run just fine.

Modern CPUs have thermal protection circuitry and should survive being powered on without a heatsink. They all have a built-in thermostat and will drop them to the minimum clock speed, eventually shutting off entirely if the temps start to get too high. But this is supposed to be a last resort protective measure. I would try to avoid using it as your only line of defense against burning out the CPU. Also, I doubt it would stay on more than 20 seconds. I'd be surprised if you even got to 10 sec before thermal shutdown.

https://www.youtube.com/watch?v=Xf0VuRG7MN4

(Incidentally, that was one of the videos which first made Tom's Hardware famous. It was made to demonstrate the then-new thermal protection on Intel CPUs, vs AMD CPUs with no protection.)

Ancient_2 · Dec 27, 2016

Solandri :

Ancient_2 :

You don't have to use thermal paste on a heatsink for a short power-on test. Just place the heatsink on top of the CPU and strap it down (you don't even need to strap it down if you're really lazy). Most of the heat conductivity is via metal-on-metal contact, not through the thermal paste. The paste just improves the efficiency a little and drops the temps a bit more. So it'll run hotter than without paste, but it'll still run just fine.

Modern CPUs have thermal protection circuitry and should survive being powered on without a heatsink. They all have a built-in thermostat and will drop them to the minimum clock speed, eventually shutting off entirely if the temps start to get too high. But this is supposed to be a last resort protective measure. I would try to avoid using it as your only line of defense against burning out the CPU. Also, I doubt it would stay on more than 20 seconds. I'd be surprised if you even got to 10 sec before thermal shutdown.

https://www.youtube.com/watch?v=Xf0VuRG7MN4

(Incidentally, that was one of the videos which first made Tom's Hardware famous. It was made to demonstrate the then-new thermal protection on Intel CPUs, vs AMD CPUs with no protection.)

yeah i better play it safe and kill my hands trying to get that heatsink on then fry the god damn thing

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