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Q: 4k at 60Hz Via Displayport on Late 2014 Mac Mini

The tech specs aren't very clear about the new Mac Mini's 4k support.

 

Via HDMI, 4096x2160 resolution is supported at 24Hz or 30Hz.  I understand that.

 

But what about the Thunderbolt/Mini DisplayPort?  Technically, shouldn't that allow 4096x2160 at 60Hz via DisplayPort 1.2?  As far as I can tell, from looking at the Intel Iris 5000 spec page on the intel site, the video card can drive a 4k display at 60Hz.  So the hardware seems to all support it, so far as I can tell.  But the tech specs page lists "Support for up to two displays at 2560 by 1600 pixels, both at millions of colors" for the Displayport.

 

Does anyone know for sure what level of support (30Hz or 60Hz) can be achieved using the DisplayPort?

 

Thanks!

4k, mini displayport 1.2

Posted on Oct 17, 2014 11:05 PM

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Q: 4k at 60Hz Via Displayport on Late 2014 Mac Mini

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  • by lllaass,

    lllaass lllaass Oct 18, 2014 3:54 AM in response to EmersonNYC
    Level 10 (189,594 points)
    Desktops
    Oct 18, 2014 3:54 AM in response to EmersonNYC

    I Googled and could not find that information. Guess we will just have to wait until users test it after it is available.

  • by JefreyL,

    JefreyL JefreyL Oct 19, 2014 3:03 PM in response to EmersonNYC
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    Oct 19, 2014 3:03 PM in response to EmersonNYC

    I couldn't find an answer anywhere yet. But it seems to have emerged nonetheless. The answer is: the Mac Mini (Late 2014) does NOT support 4K 60Hz. How I concluded this is as follows.

     

    Intel gave an official statement to a related question on their forum, repeated below. Then, we find on Wikipedia that all variants of the processor indeed have type i5/i7-4xxxU, hence it does not support 4K 60Hz. This is the same reason that the most recent 15" rMBP does support 4K60, but the 13" rMBP does not.

     

    --

     

    1. Re: Intel DH87RL and 4K/60Hz over Display Port

    allan_intelDevotee

    Thanks for joining the graphics community.

    I understand you are looking for 4K screen resolution specifications.

    This type of resolution is supported on 4th generation Intel® Core™ processor family (Intel® Iris™ Pro Graphics 5200 / Intel® Iris™ Graphics 5100, Intel® HD Graphics 5000 / 4600 / 4400 / 4200)

    See the following supported screen resolutions through DP 1.2

    DisplayPort* 1.2 / eDP*

    H-Processors: 3840 x 2160@60Hz

    U-Processors: 3200 x 2000 @60 Hz, 3840x2160@30Hz

    *Embedded display port.

    Please check additional information about graphics controller here:

    https://software.intel.com/en-us/articles/quick-reference-guide-to-intel-process or-graphics

     

    Allan.

  • by lllaass,

    lllaass lllaass Oct 19, 2014 3:10 PM in response to JefreyL
    Level 10 (189,594 points)
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    Oct 19, 2014 3:10 PM in response to JefreyL

    Good work

  • by John Lockwood,

    John Lockwood John Lockwood Oct 20, 2014 2:54 AM in response to JefreyL
    Level 6 (9,349 points)
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    Oct 20, 2014 2:54 AM in response to JefreyL

    I presume you are saying that the new Mac mini has a 'U' type processor and hence that is the reason it does not support 4K at 60Hz. As it does have a HD Graphics 5000 chip which otherwise would support 4K at 60Hz.

  • by JefreyL,

    JefreyL JefreyL Oct 20, 2014 3:08 AM in response to John Lockwood
    Level 1 (0 points)
    Oct 20, 2014 3:08 AM in response to John Lockwood

    Well it is not entirely clear which Haswell chips support 4K at 60Hz, but the statement from Intel (and the specifications manual) at least specified this for the Mobile chips. The difference between the H and U variants is actually not their graphics chip, but it is the amount of power they are allowed to consume.

     

    For example, their statement leads me to believe that even the i5-4200H, which has HD4600 graphics, but is rated at 47 Watt, can do 4K 60Hz. While the i7-4578U, the fastest proc available in the new Mac Mini, and which has HD5100 graphics, can not output 4K 60Hz. Both the cpu and gpu of the 4578U have faster turbo rates than the 4200H, so for sure Intel actually includes 4K 60Hz based on the power rating.

  • by BLee915,Solvedanswer

    BLee915 BLee915 Oct 30, 2014 9:09 AM in response to EmersonNYC
    Level 1 (10 points)
    Oct 30, 2014 9:09 AM in response to EmersonNYC

    I can confirm that i am running a 2014 Mac Mini connected to a Lenovo LI2821 4k monitor via Display Port 1.2 cable and I can only get 3840x2160 at 30hz. No 60hz.

  • by Alaska99801,

    Alaska99801 Alaska99801 Jan 25, 2015 2:56 PM in response to BLee915
    Level 1 (6 points)
    Jan 25, 2015 2:56 PM in response to BLee915

    How does the display look running at 4K @30hz?

    Does it almost look retina?

  • by Terry315D,

    Terry315D Terry315D Apr 13, 2015 11:49 AM in response to EmersonNYC
    Level 1 (10 points)
    Apr 13, 2015 11:49 AM in response to EmersonNYC

    Apple updated their information on Friday for Yosemite:

    Using 4K displays and Ultra HD TVs with your Mac - Apple Support

     

    With OS X Yosemite v10.10.3, most single-stream 4K (3840x2160) displays are supported at 60Hz operation on the following Mac computers:

    • MacBook Pro (Retina, 13-inch, Early 2015)
    • MacBook Pro (Retina, 15-inch, Mid 2014)
    • Mac Pro (Late 2013)
    • iMac (27-inch, Late 2013 and later)
    • Mac mini (Late 2014)
    • MacBook Air (Early 2015)
    • MacBook (Retina, 12-inch, Early 2015)
  • by popwarfour,

    popwarfour popwarfour May 31, 2015 2:55 PM in response to Terry315D
    Level 1 (0 points)
    May 31, 2015 2:55 PM in response to Terry315D

    Are you sure the late 2014 mac mini's support 4k @ 60hz? Have you or anyone else actually tried this?

     

    According to the list on the page they only explicitly state these machines being capable of 60hz,

     

    "With OS X Yosemite v10.10.3, most single-stream 4K (3840x2160) displays are supported at 60Hz operation on the following Mac computers:"

     

    • MacBook Pro (Retina, 13-inch, Early 2015)
    • MacBook Pro (Retina, 15-inch, Mid 2014 and later)
    • Mac Pro (Late 2013)
    • iMac (27-inch, Late 2013 and later)
    • MacBook Air (Early 2015)

     

    What they do say about the late 2014 mac mini's is this,

     

    "You can use 4K displays and Ultra HD TVs with these Mac computers:"

    • MacBook Pro (Retina, Late 2013 and later)
    • Mac Pro (Late 2013)
    • iMac (27-inch, Late 2013 and later)
    • Mac mini (Late 2014)
    • MacBook Air (Early 2015)
    • MacBook (Retina, 12-inch, Early 2015)"
  • by rodr1go,

    rodr1go rodr1go Jul 17, 2015 2:56 AM in response to EmersonNYC
    Level 1 (0 points)
    Jul 17, 2015 2:56 AM in response to EmersonNYC

    I have the same issue, currently running a 4K Dell P2415Q with the vendor mDP to DP cable and can only run @30HZ, I just bought a 1.2 DP cable to see if I can run @60HZ, all update once its done, and yes I am running on a macmini (late 2014).

  • by LordHypnos,

    LordHypnos LordHypnos Aug 8, 2015 6:25 PM in response to rodr1go
    Level 1 (4 points)
    Mac OS X
    Aug 8, 2015 6:25 PM in response to rodr1go

    rodr1go, Any success on that attempt?  We have a rMBP and a P2715Q with the vendor cable that should support this, and thus far we're seeing 30hz. 

  • by lllaass,

    lllaass lllaass Aug 9, 2015 1:36 AM in response to LordHypnos
    Level 10 (189,594 points)
    Desktops
    Aug 9, 2015 1:36 AM in response to LordHypnos

    Does the monitor have a setting for using DP 1.2? I have a 4K Dell P2415Q and in order to get 60Hz you have to set the monitor via it on-screen settings, to use DP 1.2

  • by rodr1go,

    rodr1go rodr1go Aug 9, 2015 1:38 AM in response to LordHypnos
    Level 1 (0 points)
    Aug 9, 2015 1:38 AM in response to LordHypnos

    Unfortunately mac mini does not support 4k @60Hz so I returned mine and I am looking to get an iMac instead.

  • by rodr1go,

    rodr1go rodr1go Aug 9, 2015 1:40 AM in response to lllaass
    Level 1 (0 points)
    Aug 9, 2015 1:40 AM in response to lllaass

    mac mini will not run @60Hz and that is specified in the apples 4K support page.

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