Laptop reaches 100C when I play 50C on idle

[SawsZ]

Hi, I bought my laptop 2 years ago, a Toshiba Satellite L755-1HZ ( Intel® Core™ i5-2450M, NVIDIA® GeForce® GT 525M) and I use it to play a lot so 1 month ago it started to shutdown when i was playing so i oppened it, cleaned it with ethyl alcohol 96% replaced the thermal compound (with this one http/eu.coolermaster.com/uk/product/Detail/cooling/thermal-grease/thermal-grease-htk-002.html) and when i turned it on, while i was playing the cpu reached 100C bute the GPU was fine with 50C/60C, I stopped playing and tried other technics and amounts of thermal compound but I still got those numbers.
The fan works fine, I'm using a cooling pad at the same time, i don't see what could be wrong, can anyone help me?

Thank you.

 

[jaguarskx]

A lot of times manufacturers do not really make the effort to build in good cooling into laptops. That generally requires a larger heatsink which would make the laptop both thicker and heavier. I had a similar issue with my Lenovo IdeaPad Y470 with an i5-2410m.

My advice would be to disable Turbo Boost to prevent the CPU from overclocking itself.... which leads to overheating. I assume you have Windows 7. To disable Turbo Boost you need to do the following:

1. Bring up your Power Options screen (can be found in the Control Panel)
2. Select the power profile you want to adjust (such as Balanced) and go to Change plan settings.
3.Click the link for Advanced Power Settings.
4. A new window will pop open; go to Processor Power Management and expand it.
5. You should see something like Maximum Performance 100%. Change that to 99%.

Disabling Turbo Boost means the CPU will never go beyond 2.5GHz.


The maximum performance percentage is not linear. I have not played around with it for a long time so my memory of it is not precise, but for my i5-2410m at 99% the max speed is 2.3GHz. Between something like 76% to 98% it drops to around 1.8GHz. From around 65% to 75% the CPU speed maxes out at around 1.6GHz.

In Windows 8 it works differently. If I wanted to disable Turbo Boost for my i5-4200u I had to set the Maximum Performance to about 66%. Base speed is 1.6GHz and Turbo Boost speed is 2.6GHz. The 66% setting kinda makes sense since 1.6GHz is about 62% of 2.6GHz.

 

[SawsZ]

A lot of times manufacturers do not really make the effort to build in good cooling into laptops. That generally requires a larger heatsink which would make the laptop both thicker and heavier. I had a similar issue with my Lenovo IdeaPad Y470 with an i5-2410m.

My advice would be to disable Turbo Boost to prevent the CPU from overclocking itself.... which leads to overheating. I assume you have Windows 7. To disable Turbo Boost you need to do the following:

1. Bring up your Power Options screen (can be found in the Control Panel)
2. Select the power profile you want to adjust (such as Balanced) and go to Change plan settings.
3.Click the link for Advanced Power Settings.
4. A new window will pop open; go to Processor Power Management and expand it.
5. You should see something like Maximum Performance 100%. Change that to 99%.

Disabling Turbo Boost means the CPU will never go beyond 2.5GHz.


The maximum performance percentage is not linear. I have not played around with it for a long time so my memory of it is not precise, but for my i5-2410m at 99% the max speed is 2.3GHz. Between something like 76% to 98% it drops to around 1.8GHz. From around 65% to 75% the CPU speed maxes out at around 1.6GHz.

In Windows 8 it works differently. If I wanted to disable Turbo Boost for my i5-4200u I had to set the Maximum Performance to about 66%. Base speed is 1.6GHz and Turbo Boost speed is 2.6GHz. The 66% setting kinda makes sense since 1.6GHz is about 62% of 2.6GHz.

Yes, i have Windows 7.
It didn't worked but thank you anyway