Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

BiteSizeThumb

macrumors member
Original poster
Nov 28, 2016
49
24
I have a Samsung U28D590 display that is 4K, however there are only 2 HDMI and 1 DisplayPort. How abouts can I get full 4K at 60hz out of my MacBook Pro 2016? The multimedia adapter only puts out 30hz which is awful. What adapters do I need? Any recommendations?
 
There are a few adapters that do USB-C to HDMI 4K@60Hz, for example this.
 
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
There are a few adapters that do USB-C to HDMI 4K@60Hz, for example this.
I was under the impression that software might have been the problem that's holding it back to 30hz. Can someone confirm this?
 
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
I was under the impression that software might have been the problem that's holding it back to 30hz. Can someone confirm this?
On some adapters you must hold the option key whilst selecting a resolution to get 60Hz, but adapters such as the one I linked do support 4K 60Hz.

(Adapters like the Apple Multiport do not support 60Hz because they also contain a USB 3 port. USB-C only has enough bandwidth for 4K@60Hz and USB 2.)
 
On some adapters you must hold the option key whilst selecting a resolution to get 60Hz, but adapters such as the one I linked do support 4K 60Hz.

(Adapters like the Apple Multiport do not support 60Hz because they also contain a USB 3 port. USB-C only has enough bandwidth for 4K@60Hz and USB 2.)
Thank you for the clarification. I'll have to look into those cables (in Canada) as there aren't much USB-C to HDMI options, or DisplayPort.
 
I would recommend you to buy a USB-C to Displayport cable like this (https://www.amazon.de/StarTech-Disp...49201&sr=8-1&keywords=usb+c+displayport+kabel) or a USB-C to Displayport adapter (https://www.amazon.de/Club-3D-Displ...=1486249179&sr=8-3&keywords=usb+c+displayport) and use a normal DP cable.

There are 2 points because of which I wouldn't recommend you to go the HDMI route.

1) In the first review I found on your Monitor it says there's no HDMI 2.0, so only 30hz 4k over HDMI...

2) USB-C doesn't support HDMI 2.0 so these are always "active" adapters which use the Displayport Alt-Mode and convert the Displayport signal to HDMI.

F your Display should support HDMI 2.0, I wouldn't recommend to use it, you would have to use the alternative Mode translation Route with eiither - if you're lucke - the 4k60 in the "option" resolutions or you will have to get the timing of your Display from the EDID and set it right with SwitchResX (with the Club3d USB-C toHDMI 2.0 one).

Or you buy a Displayport cable and get 4k60 as a native resolution without hassle...
 
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
  • Like
Reactions: Baldrake
I would recommend you to buy a USB-C to Displayport cable like this (https://www.amazon.de/StarTech-Disp...49201&sr=8-1&keywords=usb+c+displayport+kabel) or a USB-C to Displayport adapter (https://www.amazon.de/Club-3D-Displ...=1486249179&sr=8-3&keywords=usb+c+displayport) and use a normal DP cable.

There are 2 points because of which I wouldn't recommend you to go the HDMI route.

1) In the first review I found on your Monitor it says there's no HDMI 2.0, so only 30hz 4k over HDMI...

2) USB-C doesn't support HDMI 2.0 so these are always "active" adapters which use the Displayport Alt-Mode and convert the Displayport signal to HDMI.

F your Display should support HDMI 2.0, I wouldn't recommend to use it, you would have to use the alternative Mode translation Route with eiither - if you're lucke - the 4k60 in the "option" resolutions or you will have to get the timing of your Display from the EDID and set it right with SwitchResX (with the Club3d USB-C toHDMI 2.0 one).

Or you buy a Displayport cable and get 4k60 as a native resolution without hassle...
Thank you for the recommendations. I went ahead and ordered the USB-C to DisplayPort Adaptor. The reviews are kind of iffy (as they for some reason say HDMI... and majority of the people are connecting it to a TV) but I'll see what happens, and I have Amazon Prime so worst case I return it.

Thanks guys!
 
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
Thank you for the recommendations. I went ahead and ordered the USB-C to DisplayPort Adaptor. The reviews are kind of iffy (as they for some reason say HDMI... and majority of the people are connecting it to a TV) but I'll see what happens, and I have Amazon Prime so worst case I return it.

Thanks guys!

What was the outcome of this? Did it work? I have the same issue as you have and I'm interested to know what happened with your solution.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.