iMac 5K is Broken.

Discussion in 'iMac' started by Pipo24, May 15, 2018.

  1. Pipo24 macrumors newbie

    Pipo24

    Joined:
    May 15, 2018
    #1
    New iMac 5K, cannot even run fluently 4K 60 fps videos and has poor performance in Final Cut Pro X, even my MacBook Pro Mid 2012 can do it. ¿What the *** is happening?

    Specs:

    i5 Quad Core 3,4 Ghz

    Radeon Pro 570

    1 TB Fusion Drive

    HELP!
     
  2. Glmnet1 macrumors 6502a

    Joined:
    Oct 21, 2017
    #2
    Might be your fusion drive. Those only contain 32gb of SSD, not enough to sustain good performance with big files.

    If you still can, return it and get a SSD. Else you can always run one externally.
     
  3. Pipo24 thread starter macrumors newbie

    Pipo24

    Joined:
    May 15, 2018
    #3
    It’s not the Fusion Drive, I’m watching videos on YouTube and basically what I can tell you is that I tested this with machines with mechanical drives and they didn’t have problems.
     
  4. Glmnet1 macrumors 6502a

    Joined:
    Oct 21, 2017
    #4
    Then bring it to an Apple store and have them take a look at it.

    Before that you might want to check your running processes and see if anything is taking all the resources.
     
  5. skottichan macrumors 6502a

    skottichan

    Joined:
    Oct 23, 2007
    Location:
    Columbus, OH
    #5
    I agree with Gimnet, I have a very similar late 2017 27" and plays 4K@60 really well, yours may have a bug.
     
  6. nambuccaheadsau macrumors 65816

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #6
    The 1TB Fusion Drive is a lemon with its severely limited 32GB of SSD.

    The best way out may be a fast SSD connected in an external caddy via USB3.
     
  7. George Dawes macrumors 6502a

    George Dawes

    Joined:
    Jul 17, 2014
    Location:
    =VH=
    #7
    Amazed they sell that FD on a supposed semi-pro Mac
     
  8. Pipo24 thread starter macrumors newbie

    Pipo24

    Joined:
    May 15, 2018
    #8
    Does it play it well on YouTube? For example try with this video: also right click "Statics" on YT to see if you drop frames.
    I already did the Apple System Check, and it said that it was working correctly. But man, I feel the thing slow, choppy and unstable, does the System Check work correctly? Or in Apple Customer Service they have more options?
     
  9. gsmornot macrumors 68030

    gsmornot

    Joined:
    Sep 29, 2014
    #9
    What browser are you using to watch the video you linked on YouTube? If Safari you're not getting 4K since its not compatible with their codec. I have had no issues with 4K video on other sites like Vimeo. My iMac is similar, just a small step up.
     
  10. skottichan macrumors 6502a

    skottichan

    Joined:
    Oct 23, 2007
    Location:
    Columbus, OH
    #10
    Watched the video (2160@60) and had a total of 98 dropped frames out of 18288. They all occurred within the first 15-20 seconds. I ran it a second time to rule out any buffering issues causing the dropped frames and got roughly the same number (91 on the second run).

    To me (and your mileage may vary) 90-ish out of 18,000 is acceptable, as I didn't really see the drop.

    (Also, I watched via Chrome, as I don't know what you have to do to get 4K videos to play on Youtube in Safari)
     
  11. gsmornot macrumors 68030

    gsmornot

    Joined:
    Sep 29, 2014
    #11
    Safari went H264 when YouTube went VP9. Until one of the two adds the other codec it will not be an option.
     

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