Radeongate-affected MBP - thermal throttling after GPU reball

Discussion in 'MacBook Pro' started by yjchua95, Jul 6, 2014.

  1. yjchua95, Jul 6, 2014
    Last edited: Jul 6, 2014

    yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #1
    Hi guys,

    Title's self-explanatory.

    After sending in my MBP for a reball, I discovered that thermal throttling was very prevalent in everything I did, no matter how light or heavy.

    Whenever the CPU entered TurboBoost mode and did a short spike from 0.8GHz to 3.1GHz, the temperature spiked from 58ºC to 99ºC at the same time.

    Screenshot is attached.

    I suspect that the repair shop must've messed around with the CPU's thermal paste; hence the abnormal behavior. The guy told me that he replaced the thermal paste (didn't specify whether it was on the GPU only or on the CPU as well) with silicone pad instead, saying that silicone pad would dissipate heat better.

    What I discovered was that the silicone pad did indeed lower idling temperatures, but then, temperature also spiked way more sharply than before.

    In short, changes in temperature are very extreme with silicone pad applied, compared to with thermal paste applied.

    Another screenshot is attached from a 13" rMBP showing a gradual increase in temperature during the spike to 3.2GHz.

    Thoughts, anyone?

    PS sorry for the rambling post, but it's been bugging me to no end.

    Left image: 13" rMBP
    Right image: 15" 2011 cMBP
     

    Attached Files:

  2. cscheat macrumors member

    cscheat

    Joined:
    Sep 16, 2010
    #2
    First of all, good to hear that your mbp is back to business !!!

    Why don't you try open it up and repaste it using any paste you like ?

    I love MX4
     
  3. yjchua95 thread starter macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #3
    1. I don't have a Tri-wing screwdriver
    2. I'm too chicken to open it up and reapply it myself :)
     
  4. brdeveloper macrumors 68020

    brdeveloper

    Joined:
    Apr 21, 2010
    Location:
    Brasil
    #4
    Do some heavy stress test hoping that it will failt before service warranty expires. If it doesn't fail, it won't probably fail anymore :p
     
  5. cscheat macrumors member

    cscheat

    Joined:
    Sep 16, 2010
    #5

    Go ACE Hardware to get one !!!
     
  6. yjchua95 thread starter macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #6
    Nah, I'll most probably send it back and ask the guy to replace the silicone pad with regular AS5 or MX4 instead :)
     
  7. saturnotaku macrumors 68000

    Joined:
    Mar 4, 2013
    #7
    Could you post the name of the shop/eBay seller where you sent your machine in for repair so others might not make the same mistake if/when their machines fail out of warranty?
     
  8. yjchua95 thread starter macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #8
    It's the guy here: https://forum.lowyat.net/index.php?showtopic=3190957&hl

    Based in Malaysia.
     
  9. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #9
    I think its easier, quicker and cheaper to do it yourself. Its not all that hard.
     
  10. yjchua95 thread starter macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #10
    I could, but I'm too chicken :p
     
  11. cscheat macrumors member

    cscheat

    Joined:
    Sep 16, 2010
    #11
    any updates?
     
  12. yjchua95 thread starter macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #12
    Nope, I'm going back to the reballer on Thursday.
     
  13. yjchua95 thread starter macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #13
    FINAL UPDATE

    The reballer replaced the silicone pad with Thermaltek TG-3 thermal paste, and did not charge me anything for the repair.

    I can fully confirm that thermal throttling is no longer present and that it's operating back at its full capacity :)
     

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