Question CPU runs way over max clock speed while charging. Temps reach upto 92°C while playing any game for just 15 mins. Please help.

Jun 13, 2019
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Laptop Description:
I own an EVGA SC15 Gaming laptop (less than a year old) with the following specs:
CPU: Intel i7- 7700HQ @ 2.8 GHz- 2.81 GHz
GPU: NVIDIA GeForce GTX 1060, Core: 1455 MHz, Memory: 8008 MHz, GDDR5, 381.99
RAM: 16384 MB, DDR4, 1300 MHz, Dual-Channel, 16-16-16-39
Storage: Toshiba NVMe THNSN5256GPU7, 256 GB. Secondary: 1 TB Seagate ST1000LM048 HDD
AntiVirus: BitDefender Total Security. (If it is of concern)

Since around a month ago, my CPU has been reaching temperatures above 90°C with just 15 mins of gaming while plugged in and drops back to around 60-70°C within a minute after I quit playing. I never had this issue before.
I haven't noticed this earlier, but 'now' my CPU runs at a clock rate of 3.4 - 3.7 GHz when plugged in (even when idle). Earlier the CPU would run at such speeds only when multitasking or when on load. I haven't attempted to overclock the CPU or GPU although my laptop allows this out of the box.

I have tried blowing out the dust, updating the BIOS, checking for viruses, adjusting the fan control. I assume the thermal paste wore off(It has been less than 1 year since purchase). But the clock speed seems to be the main problem.

Below mentioned are the temperature and clock speed readings at idle, while gaming and after gaming:
(Note: Ambient temps are around 37°-40°C around here)

Idle (on battery) -- Clock(CPU) : 798 MHZ , temp : ~45°-50°C
Clock(GPU) : 139 MHz , temp : ~45°-50°C
Idle (plugged in) -- Clock(CPU) : ~3490 - 3791 MHZ , temp : ~48°-55°C
Clock(GPU) : 139 MHz , temp : ~45°-50°C
Gaming (15mins, plugged in) -- Clock(CPU) : ~3490 - 3791 MHZ, temp: ~85°-90°C
Clock(GPU) : 1809 MHz , temp : ~83°-85°C
2 secs after quittting -- Clock(CPU) : ~3490 - 3791 MHZ, temp: ~80°-85°C
Clock(GPU) : ~1800 MHz , temp : ~80°-83°C
1 min after quitting -- Clock(CPU) : ~3490 - 3791 MHZ, temp: ~65°-75°C
Clock(GPU) : 139 MHz , temp : ~65°C
10 mins after quitting(on fan boost) -- Clock(CPU) : ~3490 - 3791 MHZ, temp: ~50°-55°C
Clock(GPU) : 139 MHz , temp : ~55°C.

Sorry for the lengthy descriptions. Any insights and help would be appreciated!!
 
Jun 24, 2019
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well i think intel problem , because my laptop doing same problem like you. i was searching on youtube, google how to fix this problem but i'm not find it. my processor is i5 8300H base clock is 2,3 Ghz, while im playing is 3.90 Ghz Temperature CPU 80 C ~ 90 C then run slowly until 2,45Ghz / 2,00 Ghz.
 
Reactions: rahul_gott
Jun 13, 2019
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well i think intel problem , because my laptop doing same problem like you. i was searching on youtube, google how to fix this problem but i'm not find it. my processor is i5 8300H base clock is 2,3 Ghz, while im playing is 3.90 Ghz Temperature CPU 80 C ~ 90 C then run slowly until 2,45Ghz / 2,00 Ghz.
Thanks for the reply. But unlike yours, mine runs at 3.5GHz every time I plug the charger, regardless of me playing or not. For now, what I did was to disable turbo boost in the BIOS. So now the clock speed doesn't exceed 2.8Ghz and the temperatures are good(under 80-85 °C) without any noticeable loss in frame rates. Nonetheless, the CPU turbo boost is malfunctioning (I think). Let me know if you got your laptop re-pasted and see better thermals. :)
 
Jun 24, 2019
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I've changed my thermal paste but it's still hot like before changing thermal paste even though I've added 5 fans for my laptop hahaha
but it's still hot
 
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