Please explain this laptop shutdown.

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A

Aneesh Mohan

Honorable
Jun 5, 2013
4
0
10,510
Ok I have a toshiba laptop which comes with a Nvidia 525m GPU. The GPU is rated to be 600Mhz but toshiba thought its a good idea to underclock it so its by default running on 450Mhz which is sad. I thought Id overclock it to stock speeds and there doesnt seem to be any artifacts,and It shouldnt be there anyways as its the actual stock speed of the card. Now the problem is like after 30 or so minute of gaming, the laptop just switches off suddenly. The temp is in the safe range of 72C and Ive seen this card reach 80 on a hot summer day at 450Mhz so thats not an issue.
I want to know what could be the mechanism leading to the shut down? Could it be a power draw issue? If so ,how would it last 30 mins ? Could it be something else? Any help would be appreciated as I really would love to use it on stock speed.
 
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heyu291

Honorable
May 29, 2013
27
0
10,540
have u checked cpu temps after tweaking ur gpu?

reason I ask is because most laptops use one heat pipe, that starts at the gpu, and then crosses over the cpu & the boards power phases, then goes on to the fins that the fan blows across to cool everything.

I'm wondering if possibly constantly running ur gpu at the higher rate, has created too much heat in the pipe to properly cool the cpu and the boards power phase controllers.

just a thought.

core temp should be able to give u your cpu temps.
 
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A

Aneesh Mohan

Honorable
Jun 5, 2013
4
0
10,510
I have heavily underclocked my CPU to keep temperatures cool. Its running at 60% of its intended Clock speeds as my GPU was the bottleneck here so I can afford to underclock cpu and overclock gpu to keep things cool. So yea the processor never goes above 75.
 
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