thermal issues Laptop thermal issues - solution?

[TheMoltenEqualizer]

Hi guys!

(I am a new forum member, but I've heard lots of good things from this site so, I decided to try my luck here)

 

Skip this part if you're not interested in backstories

 

Spoiler

 

I have a Dell 7537 laptop, with an i7 4500U and a GT750m, (8 gigs of ram and 112Gb ssd + 1TB usb 3.0 external drive) and over the years I've noticed lots of quite frustrating phenomena, due to poor design choices.

The one in quiestion now is that my FPS in basically any modern game fluctuates a lot, for example, WoT has 80 fps for a mintute, then 40, then 80 again and so on and so on...

After digging around a bit, I discovered that my cpu usage is high, while the gpu usage goes down while on the 'low roll'. The CPU has a boost period, but the problem is, it's quite unpredictable, and the frequency, along with performance varies a lot. Now base is 1.8Ghz, single core boost is 3.2Ghz while it usually hovers around at 2.4Ghz when it is used for longer periods. However, when the GPU is in use too (and they share a cooling solution, which is basically the same as the one you'd find on a model without the dedicated GPU) the CPU throttles down to almost below base clock.

I checked lots of stuff, but I have not found a feasible solution yet, so here I am asking for help.

 

 

 Is there any way to improve thermals on a laptop? More specifically I want to lower my GPU heat output so it doesn't suffocate my CPU.

 

If you need more details feel free to ask me. B)

 

Thanks for Your help, in advance.

[genexis_x]

Undervolt and repaste

[TheMoltenEqualizer]

Thanks for your answer

 

Well, I've already tried to achieve better temps using those methods, but I've hit a wall with them:

 

Repaste: I've already replaced the stock paste with some hydronaut (multiple times, to make sure everything was nice) my gains were maybe 1 or 2 degrees Celsius. Only thing left is liquid metal and maybe replacing the vram thermal pads.

 

Undervolt: Yeah, on the cpu, it works quite well, but the behaviour is the same. On the gpu I can't reallly modify voltages. Afterburner did not allow for voltage controls and Nvidia inspector only allowed -25mVolts. Anything beyond won't apply; temperature targets get instantly reset. And since I did not measure any differences during stress tests, maybe even that didn't apply.

 

Sorry I didn't mention this in the main post

[genexis_x]

9 hours ago, TheMoltenEqualizer said:

hydronaut

not the best paste out there

[TheMoltenEqualizer]

6 hours ago, GeneXiS_X said:

not the best paste out there

But I've heard that the difference is maybe 1-2 degrees and the conductivity difference between it and kryonaut is 0.7 W/mk, so I don't think it would help much.

I was thinking if there was a way of unlocking voltage controls for the GK107 of the GT750M inside.

[genexis_x]

20 minutes ago, TheMoltenEqualizer said:

But I've heard that the difference is maybe 1-2 degrees

Yes it's correct. But never try never know

 

Also clean fans and heatsinks from dust