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    NP530U3C getting hot

    Discussion in 'Samsung' started by MeGuinness, Feb 22, 2015.

  1. MeGuinness

    MeGuinness Notebook Enthusiast

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    im using the Acronis True Image to backup my system and it seems is getting a bit hot in here ,are this temps normal on this serie 5 ??i already put some new cpu paste .
    the bottom panel is quite hot especially on the panel vents holes.
    thanx Capture.JPG
     

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  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Those temperatures look reasonable. I'm used to seeing CPU temperatures of more than 80C under full load but maybe it wasn't under full load when doing the backup. I would suggest you see where the temperature goes when you run wPrime 1024. You might have put the paste on a bit too thick (the thinnest layer subject to filling the gap between the CPU and the heatsink is all that is needed).

    Did you also clean out the grille on the heatsink while you were inside? I've started putting bigger rubber pads such as these on the bottom of my computers in order to improve the airflow to the vents on the bottom.

    John
     
  3. MeGuinness

    MeGuinness Notebook Enthusiast

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    I did apply paste using the one line in the Middle method, I will repaste it using the pea method and see. (The CPU surface isn't square, would the pea method work? Suggestions? )
    Yes the fan and grill is all cleaned.
    The other day tried running Disney's infinity game on it and it was scorching hot to the touch .
    The bigger rubber pads seems a good idea,got to check the diameter if the one on your link do fit.
    Is the GPU integrated with the CPU on this laptop?
     
    Last edited: Feb 23, 2015
  4. MeGuinness

    MeGuinness Notebook Enthusiast

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    i used wPrime 1024 and this is the result and temps,what the score means please enlighten me lol,
    i will re paste and rerun the test and see if temps go down even more .
    thanx Capture before repaste score.JPG
     
  5. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    A maximum temperature of 74C while running wPrime 1024 is very acceptable. AFAIK the NP530U3C family use the Intel graphics but you can check in Device Manager in case your version has a dGPU but you should have noticed a second heatsink when repasting the CPU.

    Has the problem of the hot base got worse or is it that you've only just noticed it? The notebookcheck NP530U3C review shows quite hot keyboard temperatures when under load. I'm more used to seeing a maximum external chassis temperature of around 40C for the notebooks I have measured.

    On my Dell E7440 I put the rubber pads next to the existing ones. No one will notice unless the computer is turned upside down.

    John
     
  6. MeGuinness

    MeGuinness Notebook Enthusiast

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    The strange thing was that wile wPrime was running I touched the bottom panel and was just warm, the kind of acceptable warm, when instead was running Acronis True Image was very hot ....
    I have not the laptop with me but from memory the motherboard is like this one on picture, if I remember correctly the further away chip doesn't have any heatsink on it? Will check later.
     
    Last edited: Feb 23, 2015
  7. MeGuinness

    MeGuinness Notebook Enthusiast

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  8. MeGuinness

    MeGuinness Notebook Enthusiast

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    I think I did find what is cooking under the bonnet, the pics are self explanatory, the GPU chipset is getting boiling hot because the so called heatsink (wtf Samsung) it really doesn't touch the GPU chipset ,if I push that spot when cover is fitted the plastic flex slightly until it touch the GPU chipset but once I release I doubt there is any contact between the twos ...... , solutions welcomed .

    [​IMG] [​IMG] [​IMG]
     
    Last edited: Feb 23, 2015
  9. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    That chip without a proper heatsink is not the GPU (which is included in the CPU package) but what used to be called the South Bridge and handles all the I/O such as SATA and USB. Running Acronis will give that chip a lot of work to do.

    Whether it is touching the casing deliberately (to help dissipate heat) or not, it is the likely cause of local heating in that area. If the CPU is only moderately loaded by the backup work then the system fan would only be running slowly and not creating much airflow to cool this supporting chip.

    Some notebooks have additional thermal sensors (HWiNFO can usually detect them) which might also influence fan operation if the appropriate rules have been embedded in the BIOS.

    This dosn't solve your problem but helps in the understanding of what is happening.

    John