riMac 27 + Dell UltraSharp 27 Ultra HD 5K

Discussion in 'iMac' started by Rab Simpson, Feb 23, 2016.

  1. Rab Simpson macrumors regular

    Rab Simpson

    Joined:
    Feb 10, 2006
    Location:
    Glasgow, Scotland
    #1
    Hi folks,

    I've just ordered Dell's 5K display and I'm expecting it in the next couple of days.

    Has anyone here bought one for use with the riMac 27? Any problems with setup? Are there any adapters I need to pick up?

    I know that the riMac 27 supports it since the release of 10.10.3, but I want to make sure I have everything I need to get it up and running without any speed bumps.


    Cheers,
    Rab
     
  2. Rab Simpson thread starter macrumors regular

    Rab Simpson

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    #2
    It comes with a double mDP/TB cable to drive it at 5K :)
     
  3. rdav macrumors 6502

    rdav

    Joined:
    Mar 16, 2007
    Location:
    So/California.
    #3
    Hi Rab-S,
    Some time has elapsed since your post/s. Did your iMac /Dell /5k pairing work out Ok, any issues? Also, it looks like you're using the iMac/2014/M295X. I know Apple states that it supports 5k via MST [https://support.apple.com/en-us/HT206587], but what was your experience, any flickering etc? - Thx.
     
  4. Rab Simpson thread starter macrumors regular

    Rab Simpson

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    Feb 10, 2006
    Location:
    Glasgow, Scotland
    #4
    It's been fine for the most part. The only negative I've experienced is that occasionally the display won't come on when the riMac wakes up, but attached USB devices will, meaning I have to eject those devices in order to power cycle the display.
     
  5. rdav macrumors 6502

    rdav

    Joined:
    Mar 16, 2007
    Location:
    So/California.
    #5
    "It's been fine for the most part".

    Good to hear. Perhaps macOS Sierra 10.12 will solve some of those lingering issues. I know the size & resolution is the same. But is there much difference between the appearance of the screens; colour, gloss etc?

    Also, in your user experience, is the 4Gb GPU of value for an external 5k monitor? Currently considering the iMac M395/M395X. Thou I guess it depends on the Application.
     
  6. Noltimm macrumors member

    Noltimm

    Joined:
    Apr 22, 2015
    Location:
    Slovenia
    #6
    For me this is perfekt setup...

    I have it from April 2016

    [​IMG]

    I do not use integrated USB hub. I have some flickering issues from start.

    Then I made complete restore MAC OS, turn off Monitor from wall for 30min and then plug in.

    Till now everything working without problems. When Mac turn on from sleep it takes cca 3s to turn on Dell.

    Same glossy display as iMac. A little color difference (on 100% white and 100% black)... But iMac is around max 10% brighter on max settings!
     
  7. samparmenter macrumors 6502

    Joined:
    Sep 19, 2013
    #7
    I assume the M280 can drive a second 5k display ok. What are the issues with the 280 as everyone on here seems to wail on it a lot. I just bought a second hand base config 5k iMac and I'm upgrading the ram to 32gb and the HD to a 512SSD but its stuck with the M280 still. I don't do any video editing or games so whats issues will I find.
     
  8. rdav macrumors 6502

    rdav

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    Mar 16, 2007
    Location:
    So/California.
    #8
    Suspect that the iMac/2014/A1419 AMD Radeon R9 M290X (2Gb) is the lowest GPU variant that officially supports an external 5k display, via MST of course, as per the published guides [ https://support.apple.com/en-us/HT206587 ].
     
  9. samparmenter macrumors 6502

    Joined:
    Sep 19, 2013
    #9
    Is the dual displayport method not an option. That guide doesn't go into the specifics of graphic cards. It simply gives iMac late 2014 in most cases.
     
  10. rdav, Jul 29, 2016
    Last edited: Jul 29, 2016

    rdav macrumors 6502

    rdav

    Joined:
    Mar 16, 2007
    Location:
    So/California.
    #10
    According to [http://mactracker.ca] there were only two GPU options on the iMac/2014/A1419/27"/Retina. The AMD Radeon R9 M290X & AMD Radeon R9 M295X. Thou I'm sure others will correct if this is not accurate.

    Curiously, the MacBook-Pro(M370X) seems to have been dropped by Apple from the [Dell UP2715K]/MST supported list for some reason. [ http://www.macrumors.com/2015/05/28/15-mbp-supports-dell-5k-up2715k-display/ ].
     
  11. SamPotts macrumors regular

    SamPotts

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    Sep 25, 2010
    Location:
    Sydney, Australia
    #11
    Did you not find the Dell really yellow side-by-side with the iMac 5K? The Dell I had was and also had loads of light bleed on dark screens. I sent it back and the replacement from Dell was the same so I sold it on - I couldn't handle it. Not what I expected given the cost. I did think about looking at the HP but gave up. Now have the iMac 5K + 2 x 27" TBD's for now.
     
  12. Rab Simpson thread starter macrumors regular

    Rab Simpson

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    Feb 10, 2006
    Location:
    Glasgow, Scotland
    #12
    The UP2715K runs at 60Hz full resolution using 2 Thunderbolt ports.
    --- Post Merged, Aug 2, 2016 ---
    I find it to be more red while the iMac display is further into the blue.
     
  13. maflynn Moderator

    maflynn

    Staff Member

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    Boston
    #13
    Are you able to calibrate the Dell?
     
  14. iMcLovin macrumors 68000

    iMcLovin

    Joined:
    Feb 11, 2009
    #14
    I also heard that the Dell monitors suffers from a lot of bleeds toward the edges. Quite bad considering the cost. It seems, despite the iMac screen having flaws, its the best of the bunch.
     
  15. SamPotts macrumors regular

    SamPotts

    Joined:
    Sep 25, 2010
    Location:
    Sydney, Australia
    #15
    Actually you're right about the red. When viewing it appeared warmer and taking photos of it, it looked like this:

    [​IMG]

    And the light bleed on blacks was like this:

    [​IMG]

    The replacement Dell sent me was better in terms of the light bleed but the red/yellow ting was something that I couldn't seem to get rid of and didn't look great next to the Apple displays.
     
  16. j1104638 Suspended

    Joined:
    Dec 26, 2015
    #16
    Hey guys, thank you for your experience.

    Could it be that any of you also use Thunderbolt 2 dock along with iMac 27" late 2015 and Dell UP2715K? I'm curious if it's possible to connect the dock directly to iMac and then daisy chain one of the Dell UP2715K's DisplayPorts into the dock?

    Will you be able to have both Thunderbolt 2 dock and Dell UP2715K running at 5120x2880@60 Hz at the same time considering Dell wants 2 MiniDP ports and iMac has only 2 Thunderbolt 2/MiniDP?
     
  17. redspear macrumors newbie

    Joined:
    Nov 2, 2012
    #17
    Now you can buy the DELL for less than 900 €
     
  18. maflynn Moderator

    maflynn

    Staff Member

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    #18
    Its 2,000 here in the states. unless I selected the wrong one Capto_Capture 2016-08-19_05-54-17_AM.png
     
  19. redspear macrumors newbie

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    Nov 2, 2012
  20. maflynn Moderator

    maflynn

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    #20
    Everywhere you link, its non-US sites, so I think Europe, its being sold for a huge discount compared to the US
     
  21. redspear macrumors newbie

    Joined:
    Nov 2, 2012
    #21
    Too bad it's still very expensive in US. I received mine today, plug it on my mbp and it's awesome! Just waiting to go home to test it & play with Lightroom!
     
  22. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #22
    Agreed,

    Last year when I was getting ready to buy a new computer, I was seriously looking at a Dell (both the desktop and the laptop). Doing the math, it made too much sense to get the 5k iMac for $2,000+ since the Dell monitor alone would run me that much. Plus the advantage the iMac offers is that it can run OS X and Windows, where as the Dell computer would be limited to Windows. I have no regrets, the iMac is a fantastic computer, don't get me wrong.
     
  23. Krevnik macrumors 68040

    Krevnik

    Joined:
    Sep 8, 2003
    #23
    Yeah, I really want a 5K display for this sort of setup as well. But I'd definitely need to make sure to calibrate it either way, it looks like.

    Yeup. It becomes a much easier sell once you start looking at the iMac 5K vs other 5K displays. I got the 2013 iMac because I had to get something (2008 Mac Pro just died), and have been trying to hold on on getting a 5K until the GPUs started to catch up. This year is looking pretty good for that.
     
  24. mmomega macrumors demi-god

    mmomega

    Joined:
    Dec 30, 2009
    Location:
    DFW, TX
    #24
    Amazon shows $1,499 get it in two days with free shipping or tomorrow for an extra $20.
    Screen Shot 2016-08-24 at 2.13.00 PM.png
     

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