Does cable type affect availability of resolutions in external monitor?

hajime

macrumors 603
Original poster
Jul 23, 2007
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Hello, I know that the resolutions available for external monitors is depending on the specifications of the GPU. However, somewhere on the net I read that using mini display port to hdmi cable could lead to less available resolutions to choose from. Is this correct? Currently I am connecting mini display port to hdmi of a LG 38" monitor. It is supposed to output 2560x1600 according to the specs of my MBP 2010 17". However, the best it can do is 1080p. Before I purchased the monitor, LG recommended using mini display port to display port cable rather than via hdmi.
 

CreatorCode

macrumors regular
Apr 15, 2015
158
275
US
It can. There are different versions of the HDMI spec. I believe you'll need at least HDMI 1.3 to get 2560x1600. Everything -- computer/adapters, cables, and the port on the monitor -- will have to be HDMI 1.3 or later for it to work.
 
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Apple fanboy

macrumors Westmere
Feb 21, 2012
37,130
26,172
Behind the Lens, UK
Hello, I know that the resolutions available for external monitors is depending on the specifications of the GPU. However, somewhere on the net I read that using mini display port to hdmi cable could lead to less available resolutions to choose from. Is this correct? Currently I am connecting mini display port to hdmi of a LG 38" monitor. It is supposed to output 2560x1600 according to the specs of my MBP 2010 17". However, the best it can do is 1080p. Before I purchased the monitor, LG recommended using mini display port to display port cable rather than via hdmi.
Does your Mac support a higher resolution?
https://support.apple.com/kb/sp581?locale=en_GB
Seems to suggest 1920 is the max.
 

hajime

macrumors 603
Original poster
Jul 23, 2007
5,984
829
Wow, very nice monitor.

The monitor's native resolution is 3840 x 1600 which is higher than the Macbook's highest output resolution which is 2560x1600.
For the 2017 MacBook Pro 15" which I may buy, the native resolution is 2880x1800. Don't know about possible scaling as I drag application windows between the laptop screen and the external monitor.
 
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