If anyone has both a 4K display and a 2013 retina macbook pro please do this test!

Discussion in 'MacBook Pro' started by jbg232, Oct 26, 2013.

  1. jbg232 macrumors 65816

    jbg232

    Joined:
    Oct 15, 2007
    #1
    Like the title states, if anyone has a 4K display and a late 2013 retina macbook pro with thunderbolt 2 please let us know if the display will output at 60Hz when connected through the thunderbolt/mini display port. Apple only comments on the HDMI output on their official support page on 4K displays and the macbook pro.

    Thanks
     
  2. blackreplica macrumors member

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    Sep 28, 2010
    #2
    +1000
     
  3. Beelzebubba666 macrumors newbie

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    Nov 21, 2013
    #3
    Just picked up a LG 4k display (27EA83R LG Display at Newegg) to go along with my new rMBP. I have the late 2013 15" with a 2.3 i7 and NVIDIA 750M. I connected it using a mini displayport to displayport cable and perfect - 2560 x 1440 @ 60 Hz. Apple never documented this would work, so I took a chance assuming it would and perfect! I'm surprised Apple doesn't promote this capability. FAR better than the 2560 x 1440 @ 30 Hz they document can be achieved using the HDMI port. It also works perfectly when booted to my BootCamp partition running Windows 7 64 bit.

    There you go - for anyone interested, tested and working. Run out and buy one! Or even two, why not? They look great!
     
  4. Peace macrumors Core

    Peace

    Joined:
    Apr 1, 2005
    Location:
    Space--The ONLY Frontier
    #4
    From Apple :

    HDMI video output
    Support for 1080p resolution at up to 60Hz
    Support for 3840-by-2160 resolution at 30Hz
    Support for 4096-by-2160 resolution at 24Hz
     
  5. Giuly, Nov 21, 2013
    Last edited: Nov 23, 2014

    Giuly macrumors 68040

    Giuly

    #5
    Your display is, at 2560x1440, not 4K, though.

    The ASUS PQ321Q would be 4K - at 3840x2160. Just $3323 instead of $3499, yay!
     
  6. Xerotech, Nov 21, 2013
    Last edited: Nov 21, 2013

    Xerotech macrumors 6502

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    Jul 22, 2011
    #6
    QHD not Ultra HD. ;)

    Interesting to know it runs full resolution on HDMI, thanks!
     
  7. jbg232 thread starter macrumors 65816

    jbg232

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    Oct 15, 2007
    #7
    Yes, we need to know 3840x2160, no one is doubting 2560x1440 (that's the iMac display and lower resolution than I'm running now)

    Thunderbolt 2 theoretically support 3840x2160 at 60Hz but HDMI 1.4 doesn't which is why this test needs to be done through the thunderbolt port.
     
  8. Xerotech macrumors 6502

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    Jul 22, 2011
    #8
    Wasn't there a thread about someone running 4K at 30Hz with a Seki 4k TV?
     
  9. Giuly macrumors 68040

    Giuly

    #9
    Both the ASUS and the MBP support DisplayPort 1.2, so all testing should just yield "Yep." for 3840x2160@60.
     
  10. jbg232 thread starter macrumors 65816

    jbg232

    Joined:
    Oct 15, 2007
    #10
    They should, but no one has seen it happen yet which is the reason for the thread. Supposedly it works in windows but not in mavericks suggesting driver support problems.
     
  11. Giuly macrumors 68040

    Giuly

    #11
    I don't think so. If Apple says that it's Thunderbolt 2, then so it is. And Intel says DisplayPort 1.2 is part of Thunderbolt 2.

    I doubt that you will see anyone confirming this until you can pick up a 4K display for $999, though. For whichever reason, only Windows people pick those up at $3.3K.
     
  12. m98custom1212 macrumors 6502

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    Toledo, Ohio
    #12
    LOL this site is great. FAR BETTER THEN 1440P.. but my screen is only 1440p
     
  13. Beelzebubba666 macrumors newbie

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    Nov 21, 2013
    #13
    Just checked this thread since posting... I stated incorrectly about the "4k", obviously. I had been following a few threads on this similiar topic and someone elsewhere was asking about any HQHD monitor and the new MBP machines and what port supported what. My mistake...but... 1440 @ 60 Hz is far better than 1440 @ 30 Hz. Quite a difference, actually.
     
  14. m98custom1212 macrumors 6502

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    #14
    Are you gaming? What is the difference
     
  15. jbg232 thread starter macrumors 65816

    jbg232

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    Oct 15, 2007
    #15
    At 30Hz you can see the mouse bouncing across the screen erratically...
     
  16. m98custom1212 macrumors 6502

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    #16

    30fps vs 60fps

    I never used a desktop that wasnt 60fps
     
  17. surge macrumors newbie

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    Jul 15, 2009
    #17
    Any updates on this? I'm planning on purchasing a 2013 15" retina for the sole purpose of connecting a Dell Ultrasharp 4K display to it while at home via the Display Port 1.2 connection.

    So it looks like this is still not resolved on mavericks but it works on Windows?
    That's pretty funny honestly.

    Maybe when the Mac Pro comes out they will update mavericks for proper 4k support?
     
  18. PDFierro macrumors 68040

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    Sep 8, 2009
    #18
    So who wants to be the guinea pig? I highly doubt a rMBP could drive the ASUS monitor at 4K resolutions, but I am curious what's the highest performance we could get with no lag and looking good.
     
  19. actuallyinaus, Nov 28, 2013
    Last edited: Nov 28, 2013

    actuallyinaus macrumors regular

    Joined:
    Feb 13, 2013
    #19
    why do you doubt it?

    apple says it can do 4096x2150 24fps over hdmi
    apple says it can do all 4k resolutions at 60fps over displayport 1.2 through tb2
    apple says it can cope with internal 2880x1800 and two 2560x1600 simultaneously

    even if you compare the number of pixels to drive two 2560x1600 displays to 4096x2150, it's only a 7% difference

    (2560*1600)*2 = 8192000
    4096*2160 = 8847360

    so if you close the laptop and only run the 4k monitor its about 34% less pixels than the triple screen setup people say runs fine..

    (2560*1600)*2 + 2880*1800 = 13376000
    4096*2160 = 8847360

    though an actual test to see how well it performs / how loud the fans get would be nice

    ----

    additionally if you use apple's scaling options and pick 1920x1200 it runs the screen at 3840x2400 (keeping the 200% dpi) and scales that image down (looks better than plain 1920x1200) and that is 9216000 pixels so...
     
  20. jbg232 thread starter macrumors 65816

    jbg232

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    Oct 15, 2007
    #20
    Apple doesn't expressly say that... That's the problem.
     
  21. actuallyinaus, Dec 2, 2013
    Last edited: Dec 2, 2013

    actuallyinaus macrumors regular

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    Feb 13, 2013
    #21
    sure apple doesn't state 4k anywhere

    however the only reason the hdmi is limited to 24fps is due to the hdmi version being 1.4 not 2.0

    the tb2 ports are 20G/ss and support display port 1.2 (requires 17.28GB/s) which can do 4k 60fps

    and the graphics cards irispro & 750m can both do 4k

    iris pro "Each digital port [of which there are three] is capable of capable of driving resolutions up to 3840x2160 at 60 Hz through DisplayPort and 4096x2304 at 24 Hz/2560x1600 at 60 Hz using HDMI" source (page 32)

    page 36 shows a table of all valid combinations actually showing a possible 4k 60fps over eDP (internal display) and dual 4k fps external displays over DP

    750m "Up to 3840x2160" source
     
  22. rainbowsofwhite macrumors 6502

    Joined:
    Jul 21, 2011
    #22
    I just wanted to say that this is a great thread and one I'm keeping an eye on.
    I have purchased a maxed out current MacBook Pro with Retina 15" (not cheap) and was hoping to connect a Ultra HD 3840 x 2160 display.

    So am I correct in thinking that this is a software issue with Mavericks at the moment?
    With some new displays being released soon with Thunderbolt 2, will this perhaps fix the issue? or not?

    Thanks again.
     
  23. jbg232 thread starter macrumors 65816

    jbg232

    Joined:
    Oct 15, 2007
    #23
    The truth is... no one knows. It is strange that Apple specifically mentions that only mac pros will work with 4K monitors at 60Hz but it seems to be software only at this point thus likely due to the drivers. Whether apple will put the resources into developing drivers for the graphics card of the new rMBP is still an unknown.
     
  24. PmattF macrumors member

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    Dec 28, 2006
    #24
  25. cs02rm0 macrumors member

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    Jul 31, 2013
    #25
    I'm baffled that Microsoft have better support for Apple's hardware than Apple does.

    What are they playing at?!
     

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