Which thermal paste do you recommend of changing CPU in 2015 iMac?

Discussion in 'iMac' started by mbosse, Dec 10, 2018.

  1. mbosse macrumors 6502

    Joined:
    Apr 29, 2015
    Location:
    Vienna, Austria
    #1
    Hi

    I am contemplating changing the CPU of my 2015 iMac (27") and wonder which thermal paste you would recommend using.

    Is there one paste one could use for CPU as well as GPU and VRAM chips (those have to be repositioned as well)?

    Thanks,
    Magnus
     
  2. nambuccaheadsau macrumors 68000

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #2
    Why are you having problems, or just fell like doing this?

    For mine always have used Arctic Silver when changing CPUs. The No. 1 rule is don't apply too miuch and use an alcohol wipe to clean off old paste.
     
  3. mbosse thread starter macrumors 6502

    Joined:
    Apr 29, 2015
    Location:
    Vienna, Austria
    #3
    I have never done this before, and the ifixit instructions tell that one should use a specifically stiff paste on the VRAM elements (e.g Arctic Silver 5).

    Since I plant to do the CPU change only once I would prefer - if possible - to use only one single type of paste.

    Thanks,
    Magnus
     
  4. Fried Chicken macrumors 6502a

    Fried Chicken

    Joined:
    Jun 11, 2011
    #4
    Any CPU paste would do (don't use liquid metal though). Macs are just PCs.
     
  5. mbosse thread starter macrumors 6502

    Joined:
    Apr 29, 2015
    Location:
    Vienna, Austria
    #5
    If you follow iFixit's guide (https://www.ifixit.com/Guide/iMac+Intel+27-Inch+Retina+5K+Display+CPU+Replacement/30515 step #62), they'll recommend the following for the VRAM chips:
    24yDU6cMOi3WKGhN.huge.jpeg

    I also understand that an iMac should be treated just like a PC, but since I have never ever changed a CPU I am a bit irritated by iFixit's recommendation.

    Best,
    Magnus
     
  6. Fried Chicken macrumors 6502a

    Fried Chicken

    Joined:
    Jun 11, 2011
    #6
  7. arkieboy72472 macrumors member

    arkieboy72472

    Joined:
    May 4, 2017
    #7
    I am sure they say what they say for a reason. Having worked with them before, I trust whatever they say.
     

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6 December 10, 2018