Second 1440p display possible with Display Port to DVI adapter?

[Blue_Ocean]

I didn't swap cards yet because of some issues with my new Skylake build.

However I did some quick experiments with my AMD graphics: Without injection (that's what I usually use) I'm getting proper 1440p on my HDMI port.
With injection it's limited to 1080p like your NVIDIA.

You could search for patches removing the pixel clock limit, never did something like that myself, but I guess it might help.

I know it's been a while but I finally got around to applying this pixel clock limit patch: https://github.com/Floris497/mac-pixel-clock-patch which I found out about from a successful build thread.

It's literally 2 terminal commands, a restart, and it completely solved the issue. 1440p is outputting fine via HDMI, so I can finally get another 1440p monitor without having to spooge on a new graphics card!