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  1. #1
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    Question ROG G751JY repaste

    I noticed my laptop was getting quite hot recently, and checked the temperature with some stress test.
    CPU goes as high as 96 degrees celsius, while GPU hits 87/88 degrees and throttles.
    So I pretty much have to open it up and clean/repaste everything at this point, been 1.5 years since the last time anyway.
    But I've never done it myself before, so I need some guidance.
    Which termal paste would work the best for this model? I've seen a number of people complainig about kryonaut and mx-4 drying up quickly.
    Also, apparently I need to get thermal pads as well for some stuff. How thick should they be and which ones should I get? Frankly I'm not even sure where I need to use them.
    I found this picture for another laptop that uses the same gpu (gtx 980m):


    But it looks a bit different on this model:



    I really need help with this.
    Thanks in advance!

  2. #2
    ROG Guru: White Belt Array andreacos92 PC Specs
    andreacos92 PC Specs
    Laptop (Model)Asus ROG G751JY-T7134H
    MotherboardAsus G751JY (Intel HM87 Chipset) with Custom BIOS
    ProcessorIntel Core i7-4710HQ @ 3.8 GHz (1.24 V) all 4 cores & cache
    Memory (part number)16 GB DDR3L HiperX @ 2133 MHz CL11-12-13
    Graphics Card #1NVIDIA GTX 980M 4GB GDDR5 with Custom VBIOS @ 1400/5800 MHz (1.162 V)
    MonitorStock 17.3" IPS 1080p @ 90 Hz
    Storage #1Samsung SSD 960 EVO M.2 NVMe 500 GB (W10 Pro)
    Storage #2SanDisk SSD 128 GB (Linux) - Hitachi HDD 1 TB 7200 rpm
    CPU CoolerStock cooler with Thermal Grizzly Kryonaut thermal compound
    CaseStock with Air Intake Mod
    Power SupplyDell 330 W
    OS Windows 10 Pro - Linux Manjaro XFCE
    andreacos92's Avatar
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    With my G751JY, in these years, I used MX-4, IC Diamond and now I have Thermal Grizzly Kryonaut (repasted a month ago).
    I had no problems with all of them and they are quite good in thermal performance.

    Regards the GPU VRAM and VRMs, Asus used thermal paste and I suggest you to do the same.
    I tried using 1.0 mm thermal pads, but I had the impression that the gap was so small that the pads thickness prevent the right contact between GPU die chip and the copper heatsink.
    Maybe you can try with 0.5 mm thermal pads, I think they should work quite well.

  3. #3
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    Quote Originally Posted by andreacos92 View Post
    With my G751JY, in these years, I used MX-4, IC Diamond and now I have Thermal Grizzly Kryonaut (repasted a month ago).
    I had no problems with all of them and they are quite good in thermal performance.

    Regards the GPU VRAM and VRMs, Asus used thermal paste and I suggest you to do the same.
    I tried using 1.0 mm thermal pads, but I had the impression that the gap was so small that the pads thickness prevent the right contact between GPU die chip and the copper heatsink.
    Maybe you can try with 0.5 mm thermal pads, I think they should work quite well.
    Thank you. Have you had any problems when using thermal paste for VRAM and VRMs ?
    And what brand of thermal pads should I look for if I decide to go with them?

  4. #4
    ROG Guru: Blue Belt Array mdzcpa PC Specs
    mdzcpa PC Specs
    MotherboardMaximus Hero XI
    Processor9900k @ 5.1Ghz All Core 1.315v AVX -2
    Memory (part number)Gskill GTZ 4133 C17 32GB (4x8GB)
    Graphics Card #1ROG Strix 2080 TI OC
    Sound CardOn Board
    MonitorROG PG348Q
    Storage #1Samsung 970 Pro M.2 512GB for OS & APPS
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    Accessory #1 ROG 751JY Laptop for Moobile Gaming
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    Just an observation. There is WAY to much paste applied in your photo. I am not sure who did that you in the past, but that is a MESS. Paste should be applied only to the center chip or integrated heat spreader. It should be a nice thin layer. It does not need to be applied in globs and blobs all around the area surrounding the CPU or GPU. In fact, doing so can make the chip run hotter.

  5. #5
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    Quote Originally Posted by mdzcpa View Post
    Just an observation. There is WAY to much paste applied in your photo. I am not sure who did that you in the past, but that is a MESS. Paste should be applied only to the center chip or integrated heat spreader. It should be a nice thin layer. It does not need to be applied in globs and blobs all around the area surrounding the CPU or GPU. In fact, doing so can make the chip run hotter.
    Yeah, I agree, gonna take a while to clean this up

  6. #6
    ROG Guru: White Belt Array andreacos92 PC Specs
    andreacos92 PC Specs
    Laptop (Model)Asus ROG G751JY-T7134H
    MotherboardAsus G751JY (Intel HM87 Chipset) with Custom BIOS
    ProcessorIntel Core i7-4710HQ @ 3.8 GHz (1.24 V) all 4 cores & cache
    Memory (part number)16 GB DDR3L HiperX @ 2133 MHz CL11-12-13
    Graphics Card #1NVIDIA GTX 980M 4GB GDDR5 with Custom VBIOS @ 1400/5800 MHz (1.162 V)
    MonitorStock 17.3" IPS 1080p @ 90 Hz
    Storage #1Samsung SSD 960 EVO M.2 NVMe 500 GB (W10 Pro)
    Storage #2SanDisk SSD 128 GB (Linux) - Hitachi HDD 1 TB 7200 rpm
    CPU CoolerStock cooler with Thermal Grizzly Kryonaut thermal compound
    CaseStock with Air Intake Mod
    Power SupplyDell 330 W
    OS Windows 10 Pro - Linux Manjaro XFCE
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    Quote Originally Posted by Cannon.19 View Post
    Thank you. Have you had any problems when using thermal paste for VRAM and VRMs ?
    And what brand of thermal pads should I look for if I decide to go with them?
    Until you use not conductive paste, you don't have any problems with thermal paste on VRAM and VRMs. And most of the well-known thermal paste are not conductive, so go with the one you can afford better in your country. Arctic MX-4, IC Diamond, Kryonaut are among the best, but the difference between a top-end compound and a medium compound is smaller than you can think. Go with a well known brand and make sure to apply it correctly, that makes the bigger difference.


    Quote Originally Posted by mdzcpa View Post
    Just an observation. There is WAY to much paste applied in your photo. I am not sure who did that you in the past, but that is a MESS. Paste should be applied only to the center chip or integrated heat spreader. It should be a nice thin layer. It does not need to be applied in globs and blobs all around the area surrounding the CPU or GPU. In fact, doing so can make the chip run hotter.
    +1

    I didn't say that because I thought that was a photo taken from the web, but yes that was too much paste.

    Anyway, with some thermal pastes you can spread on the chip, Thermal Grizzly suggests this method for example, because it is quite soft. But you have to be sure to create a thin and uniform layer at the same time, and it's not the easiest thing in the world.
    On the other hand, you can go with the little pie at center of Die chip method, and then be sure to apply a good pressure with the heatspreader to make the paste spread well.

  7. #7
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    Quote Originally Posted by andreacos92 View Post
    Until you use not conductive paste, you don't have any problems with thermal paste on VRAM and VRMs. And most of the well-known thermal paste are not conductive, so go with the one you can afford better in your country. Arctic MX-4, IC Diamond, Kryonaut are among the best, but the difference between a top-end compound and a medium compound is smaller than you can think. Go with a well known brand and make sure to apply it correctly, that makes the bigger difference.




    +1

    I didn't say that because I thought that was a photo taken from the web, but yes that was too much paste.

    Anyway, with some thermal pastes you can spread on the chip, Thermal Grizzly suggests this method for example, because it is quite soft. But you have to be sure to create a thin and uniform layer at the same time, and it's not the easiest thing in the world.
    On the other hand, you can go with the little pie at center of Die chip method, and then be sure to apply a good pressure with the heatspreader to make the paste spread well.
    It is indeed from the web , I haven't opened mine yet, want to make sure I'm ready before I do.
    It's a screenshot from a youtube video where a guy just changed cpu and gpu paste, he didn't even touch the VRMs and VRAM, which I found really odd.
    Thank you for helping again, I think I'll order the 0.5mm and 1mm pads too, just in case the paste doesn't fill the gap nicely.

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