Unable to get 4K @ 60 Hz | Macbook Pro 2017

rafayshaukat

macrumors newbie
Original poster
Oct 17, 2018
4
0
Hello,

I have been unable to achieve 4K resolution @ 60 Hz. I'm unable to get 60 Hertz refresh rate. The option is greyed out at 30 Hertz. I have the following hardware:
I have been searching the internet for hours looking for answers and I can't seem to figure out what's wrong. I even read a few Amazon reviews on the cable I'm using and people seem to have 4K @ 60Hz on this same monitor.

Under System Preferences > Display, this is what I get:
Screen Shot 2018-10-17 at 3.41.09 PM.png


What's the problem here? Is it the monitor or the cable I'm using?
 
Last edited:

Premal212

macrumors regular
Jan 26, 2017
185
69
London UK
I had this problem some time ago, it was due to the adaptor being HDMI 1.4 which only supports 4k@30hz. Purchased another adaptor that does HDMI 2.0 which is 4k@60hz. Of course, yours is a different case with display port.

o I'm not overly sure, potentially the dudes who sent you the cable may be selling you garbage? My only thoughts
 

rafayshaukat

macrumors newbie
Original poster
Oct 17, 2018
4
0
I had this problem some time ago, it was due to the adaptor being HDMI 1.4 which only supports 4k@30hz. Purchased another adaptor that does HDMI 2.0 which is 4k@60hz. Of course, yours is a different case with display port.

o I'm not overly sure, potentially the dudes who sent you the cable may be selling you garbage? My only thoughts
That's what I'm leaning towards as well. I just don't understand what exactly am I doing wrong.
 

Fishrrman

macrumors Core
Feb 20, 2009
19,609
6,828
Some (not all) USB-c to displayport cables that work with 2016 MBPs WILL NOT WORK with the 2017/18 MBPs.

The only way to know is to read the user reviews (and also product ad should specifically state that it's good with the 2017/18 MBPs).
 
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