dvi-d vs. displayport vs hdmi

jimthenagual · Nov 7, 2014

My monitor is 2560x1440. Been trying to do my homework on which connection I need to be using. If I'm understanding right, my current cable does not support the monitor's full resolution as it is only single link dvi.

What is the best cable I should get that supports my monitor's full resolution?

Monitor is Asus pb278q
GPU is evga SSC acx2.0 970 sli

Paul NZ · Nov 7, 2014

Depends what connections its got. And does the PC have the same connections?

i7Baby · Nov 7, 2014

See http://www.cnet.com/au/news/hdmi-vs-displayport-vs-dvi-vs-vga-which-connection-to-choose/
HDMI1.4 - 3,820x2,160-pixel resolution at 30 frames per second.
DP - 3,840x2,160-pixel resolution at 60fps
DVI - Dual link - same as HDMI, single - 1,920x1,200,

jimthenagual · Nov 7, 2014

Updated with GPU and monitor model numbers.

Looks like my choices are the same as the thread title

jimthenagual · Nov 7, 2014

According to that info i7baby, I want to be using displayport, as it looks like both my monitor and GPU supports it, and that would be the only way to get the full resolution/framerates

CaptainTom · Nov 7, 2014

jimthenagual :

HDMI 1.4 or DVI-D. They are equal.

jimthenagual · Nov 7, 2014

@captaintom
According to i7baby above, with hdmi1.4 or dvi dual link, I would be limited to 30 fps, and this would not be the case with displayport. Am I understanding correctly?

Pinhedd · Nov 7, 2014

jimthenagual :

Dual-Link DVI-D, DisplayPort, or HDMI 1.4 will work for your configuration. HDMI 1.3 will not work, so both the GPU and Display must be HDMI 1.4 compliant.

jimthenagual · Nov 7, 2014

@pinhedd
Is it true that HDMI 1.4 and dual link dvi-d have a 30 fps cap which is not the case with displayport?

I'm asking because it looks like that's the case according to the link i7baby gave above

Pinhedd · Nov 8, 2014

jimthenagual :

CNet is a terrible source for... pretty much everything.

refresh rate is not a function of the display cable. It's a function of the display controller, pixel bandwidth, and the display timings.

I use a 30 inch 2560x1600 display at 60hz. I have it connected via Dual-Link DVI-D, it works fine.

My display also has HDMI, but it's only 1.3 compliant so I can only drive it to 1920x1200 (which is the same as Single-Link DVI-D).

It also has DisplayPort 1.2, which provides truckloads of bandwidth and can easily drive it at 2560x1600.

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