PCH heatsink mod alienware 15

Discussion in '2015+ Alienware 13 / 15 / 17' started by judal57, Aug 2, 2016.

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  1. judal57

    judal57 Notebook Deity

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    Ok i made a heatsink for the PCH ... i was getting like 80°C on pch so.... i wanted to reduce temps and see if the power limit throttling is caused by heat... i bought the aluminum piece on a sound repair shop ... i dont know how to call it XD my english is not perfect as you can see lol ... i used a little piece of thermal pad 0,5mm tickness and 6W/mk ... is not the best, but make a good job. I took advantage of the disassembly and cleaned everithyng @VICKYGAMEBOY

    EDIT
    ok to everyone ... i tested a LOT and here is my conclusion: for AW15R1 and 17R2 models ...
    1) confirmed = PCH overheating cause the Power limit throttling without any "visible" reason because they hide the PCH temperature ... the only way to see it, is from DIAGNOSTIC test at boot.
    2) intel thermal framework is a problem without the proper driver of intel management engine ... i fount that windows update automatically the driver to 11.something version and the processor consume more voltage without needing it. for example playing battlefiled 4 at 2,5Ghz with 11 version, the voltage of the procesor is 0,86V with my undervolt ... and with the stock intel MEI 10(that you can find on the page of Dell) it consume 0,746V at 2,5Ghz and obiously less heat. you have to go to device manager and find the driver on system devices and uninstall the driver checking the option of delete the driver folder. also you need to uninstall the driver from installed programs and install it again. and to prevent a future update driver = http://winsupersite.com/windows-10/stop-automatic-driver-updates-windows-10
    3) with the proper intel MEI driver and the thermal framework driver from Dell, you can adjust the power options in the advanced setting of your power plan (now with real efect) ... also you can make your fans spin as the A00 Bios using the A06 putting the acoustic limit to 5
    4) putting a simple thermal pad (2 of 2mm thicknes, like a sandwich and 2cmx2cm) can improve your PCH temperature (i tested it and works fine) preventing the power limit throttling and 800mhz bug ... without any type of heatsink my cpu throttles down to 2,5Ghz at 15min of gaming and something arround 1,5 hours of gaming throttles down to 800Mhz for 2 minutes and later to 2,5Ghz again. PCH colling prevent this issue

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    Last edited: Aug 9, 2016
  2. VICKYGAMEBOY

    VICKYGAMEBOY Notebook Deity

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    @judal57 wow nice job there, but how about copper shims.. use a thermal pad inbetween PCH and copper shim.. but seems ur getting a good temp drop.. 20c difference... its ok bro.. you dont have to speak english proper.. we all can understand.. why did u the remove the fan for ?? i might open my system tomorrow before installing windows 10 redstone 2, gonna try use some of the heatsink from my old amd motherboards.. lets see.
     
  3. judal57

    judal57 Notebook Deity

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    i used aluminum because all pch i saw before used aluminum heatsink ... copper have more heat transfer than aluminum ... but this heatsink come with thin blades ... this is better for cooling ... in any repair store of speakers you can find one ... i bought 2 of these for less than 1 dollar. i removed the fan to clean it propertly with isoprololic alcohol in spray ... the dust stuck between blades ... use a paint brush to remove dust ... dont forget to use a cellphone plastic kit to disassembly your laptop and prevent marks ..
     
  4. iunlock

    iunlock 7820HK @ 5.1GHz

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    Very nice indeed. ~16C drop in temp is well worth the mod for anyone having high PCH heat issues.

    Mine stays around 69-71C max after hours of gaming...

    Are you able to cook up a few since you have it going already with the cut out and measurements? I'm sure we'll be able to donate for the sake of convenience. :)
     
  5. judal57

    judal57 Notebook Deity

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    yes, i can do more ... i just need to find the proper heatsink again

    looking the free space, i am going to do heatsinks for my SSD too...
     
    Last edited by a moderator: Sep 19, 2016
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  6. iunlock

    iunlock 7820HK @ 5.1GHz

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    That'd be nice!

    Powered by: Quad Core Exynos + 6820HK
     
  7. Punisher5.0

    Punisher5.0 Notebook Guru

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    Nice job. You made the right choice on metal because aluminum dissipates heat better than copper.
     
  8. VICKYGAMEBOY

    VICKYGAMEBOY Notebook Deity

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    this is a myth.. copper does have better heat transfer.. dense..
     
  9. Punisher5.0

    Punisher5.0 Notebook Guru

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    Do you have any tests that show that? I'd be interested in reading about it.
     
  10. Mobius 1

    Mobius 1 nͫٴiͤٴcͫٴeͤ੮Һ૯ ცɿ૭ ૭ค ̷̧̟̭̺͕̜̦̔̏̊̍ͧ͊́̚̕͞ עٴٴٴٴٴٴٴٴ

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    I believe copper holds heat better but aluminum disperses heat faster

    not sure on that though
     
    quickboat22 likes this.
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