Dell Laptop Overheating Easily And Without Reason

jetfighter545

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May 20, 2015
510
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5,160
I recently bought a new laptop from the dell official website; an Inspiron 7570 with these specs:

  • i7 - 8550U 4-core 8-thread (pretty decent processor)
    8GB RAM
    250GB SSD
    1TB HDD
    Nvidia Geforce 940MX GDDR5
It was a very reasonable deal for the price, especially considering its aluminium casing which would allow for easy heat dissipation. (foreshadow intensifies)

However, right when I booted it up and loaded in a few programs, I noticed that the CPU would reach 90C+ when browsing the web and reach 100C within a few seconds of booting up a mid-range game that both the GPU and CPU should be able to handle.

Luckily intel magically turns the CPU into a potato to prevent component damages. This is however extremely annoying in games where I should get a whole 60fps but I end up with a stuttery 30fps.

I, not being your average middle aged laptop user decided to rule out a few simple things.

  • Dust had not accumulated in the fans; the laptop is new but I checked anyways.
    The ambient room temperature is not too hot; and I use a cooling pad that helps a little.
    Fans aren't broken; I can hear them.
    The thermal paste was not the cause either despite my suspicions, I opened it up and replaced the paste.

So simply put I am out of ideas. I'm sure I've left something out of the equation so just ask if necessary.
Thanks guys.
 
Solution


You should be able to turbo boost without issue, especially considering the very low base clocks of the 8th gen U-series CPUs. What you paid for with the i7 version of the CPU is essentially the higher turbo boost clocks compared to an i5u.

Under normal operating conditions and with a decent cooling solution, the CPU should run at turbo boost until temps reach a certain threshold, and then throttle back turbo boost back to base clocks (1.8 GHz). So without it enabled, you're missing about 1.5 - 2 GHz of performance (based on how many cores are active).
 

jetfighter545

Reputable
May 20, 2015
510
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5,160


Are you suggesting that I should RMA? Is it due to a heatsink problem? I just can't imagine what the problem is.
 


Maybe. My i7-6600u (HP) doesn't get anywhere near the temps where it even throttles out of turbo boost. Granted, that's only a 2-core CPU, but it runs pretty high clocks for a 15W TDP. Throttling back beyond even the base clock speed as you describe is unacceptable for a new computer.

When you re-applied thermal paste, did you use a small pea-sized amount and let the heat sink spread it out when it was put back on, or did you smear it over it? I have seen OEMs use huge gobs of thermal paste that make for poor thermal conductivity, and as a result, the chips throttle and entire computer heats up instead of blowing the heat out the heat sink fins.
 
Solution

jetfighter545

Reputable
May 20, 2015
510
0
5,160

I'm pretty sure I've used the thermal paste correctly as it improved a little from the stock paste; I'll try to get an RMA or something similar. Thanks for your insight.