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Cooling suggestions for my M17x R4 CPU


Otic
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Hi Everyone. This post is about the heat issues I have had with my M17x R4 and looking for any suggestions. 

 

I have a 3940xm. It has always run hot. In my attempts to keep it cool I have replaced the stock heatsink with a full copper 3 heat pipe replacement. I tested temps with both Arctic MX5 and Thermal Grizzly Kryonaut Extreme and stuck with the MX5 based on temps from Time Spy benchmarks. I have the laptop sitting ontop of a Coolmaster U3 Plus at Max speed with the fans aligned under the vents and the middle fan in the middle, roughly where the cpu and gpu would be located. Finally I have undervolted my GTX1070 to reduce thermal conduction and in the process gained a bit of performance. After all of this, I have gone from a Adverage CPU temp on Time Spy of roughly 98"C (From memory. Did not record prior) to now having an Adverage CPU temp of 82"C.

 

Is this the best that I can hope for, before going to liquid metal? (I have no intentions of using liquid metal). Is there a way I can undervolt my CPU? I cannot find a way to reduce the core voltage in the bios or any tools such as XTU or Throttlestop. I guess it's not supported on these 3rd gen Intel's?

 

Thanks

Alienware M17x R4: intel Core i7 Extreme 3940XM | Nvidia GeForce GTX1070 | Corsair Vengeance 32GB DDR3 1600MHz | Intel Killer Wi-Fi 6 1650x | 1x Kingston KC600 1TB mSATA SSD, 1x Crucial BX500 2TB SSD

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There is a thermal pad under the GPU which I removed and the temps dropped like 10c. The HDD in slot 1 was going over 60c so swapped it to slot 0 and put the SSD in slot 1.  SSD can handle more heat than HDD. But when I removed that thermal pad everything cooled off. I think it was transferring GPU heat to the motherboard and blocking airflow from the SSD/HDD slot. I also have the all copper triple pipe vacume chamber for the CPU, makes a world of difference, OC to 44 no problem. Hope this helps!

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Alienware M18x R2 i7-3920xm-16GB DDR3-Quadro P4000  Alienware M17x R4 i7-3940XM 16GB DDR3-1866 Quadro P4000

Precision m6700 i7-3840QM - 16.0GB DDR3 - GTX 970M     Alienware M17x R4 i7-3940XM 32GB DDR3-1600 GTX 680M 120hz 3D
Precision m4700 i7-3610QM-8.00GB DDR3 @ 1600MHz-K2000M

GOBOXX SLM  G2721-i7-10875H RTX 3000-32GB ddr4(Gave to my Wife)

 

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  • 1 month later...
On 9/26/2022 at 9:30 AM, Otic said:

Hi Everyone. This post is about the heat issues I have had with my M17x R4 and looking for any suggestions. 

 

I have a 3940xm. It has always run hot. In my attempts to keep it cool I have replaced the stock heatsink with a full copper 3 heat pipe replacement. I tested temps with both Arctic MX5 and Thermal Grizzly Kryonaut Extreme and stuck with the MX5 based on temps from Time Spy benchmarks. I have the laptop sitting ontop of a Coolmaster U3 Plus at Max speed with the fans aligned under the vents and the middle fan in the middle, roughly where the cpu and gpu would be located. Finally I have undervolted my GTX1070 to reduce thermal conduction and in the process gained a bit of performance. After all of this, I have gone from a Adverage CPU temp on Time Spy of roughly 98"C (From memory. Did not record prior) to now having an Adverage CPU temp of 82"C.

 

Is this the best that I can hope for, before going to liquid metal? (I have no intentions of using liquid metal). Is there a way I can undervolt my CPU? I cannot find a way to reduce the core voltage in the bios or any tools such as XTU or Throttlestop. I guess it's not supported on these 3rd gen Intel's?

 

Thanks

Did you OC the cpu in bios? I have mine set at 43,42,41,40 and if I go higher it throttles and gives lower 3Dmark scores. I also have the all copper triple pipe vacume plate, and no cooler, just raised off the desk 3/4 inch. That cooler should be doing you better than what your getting.

Alienware M18x R2 i7-3920xm-16GB DDR3-Quadro P4000  Alienware M17x R4 i7-3940XM 16GB DDR3-1866 Quadro P4000

Precision m6700 i7-3840QM - 16.0GB DDR3 - GTX 970M     Alienware M17x R4 i7-3940XM 32GB DDR3-1600 GTX 680M 120hz 3D
Precision m4700 i7-3610QM-8.00GB DDR3 @ 1600MHz-K2000M

GOBOXX SLM  G2721-i7-10875H RTX 3000-32GB ddr4(Gave to my Wife)

 

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  • 2 weeks later...
On 9/26/2022 at 3:30 PM, Otic said:

Hi Everyone. This post is about the heat issues I have had with my M17x R4 and looking for any suggestions. 

 

I have a 3940xm. It has always run hot. In my attempts to keep it cool I have replaced the stock heatsink with a full copper 3 heat pipe replacement. I tested temps with both Arctic MX5 and Thermal Grizzly Kryonaut Extreme and stuck with the MX5 based on temps from Time Spy benchmarks. I have the laptop sitting ontop of a Coolmaster U3 Plus at Max speed with the fans aligned under the vents and the middle fan in the middle, roughly where the cpu and gpu would be located. Finally I have undervolted my GTX1070 to reduce thermal conduction and in the process gained a bit of performance. After all of this, I have gone from a Adverage CPU temp on Time Spy of roughly 98"C (From memory. Did not record prior) to now having an Adverage CPU temp of 82"C.

 

Is this the best that I can hope for, before going to liquid metal? (I have no intentions of using liquid metal). Is there a way I can undervolt my CPU? I cannot find a way to reduce the core voltage in the bios or any tools such as XTU or Throttlestop. I guess it's not supported on these 3rd gen Intel's?

 

Thanks

 

Some people replaced the stock fan with one from the m14x R1 as this fan can push much more air. Unfortunately these fans are hard to get as lots of sellers sell "R1 compatible" fans which is not what you want. The R1 one has similar shaped blades like the gpu fan which is the reason why they are so good. 

Alienware Area 51 ALX R5 3600 32GB 3200MHz RTX 2080 Ti FE

Alienware M18x R2 I7 3840QM 4.2GHz 16GB 1600MHz GTX 1070(Zotac MXM, will add the missing MOSFETs to use the 115W MSI vBios)

Alienware M17x R4 I7 3630QM 16GB 1600MHz GTX 980M 8GB(modded to six MOSFET to increase the 'power limit')

MacBook Pro Retina I7 3820QM 16GB 1600MHz GT650M (for school)

And lot's of other stuff in my hobby corner (old Clevo's 'n' stuff like that)😄

 

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