Would my performance tank if I add a 2nd monitor?

[captain420 3,099]

I currently fly in P3D v4.3 on a single 4K screen. I was considering adding a 2nd monitor perhaps 1920x1280 to run my EFB, Flight Planning apps on. Would this slow down the performance because my video card has to render more pixels?

I have a GTX 1080 FTW (8GB RAM), and running Windows 10 Pro with 32GB of system RAM.

Edited June 26, 2018 by captain420

[Arndt777 1]

I have more or less the same configuration, and more or less the same question!

I suppose, that adding a second monitor will reduce performance to some degree. Would it reduce the gap in performance, if I install a second graphic card (perhaps a GTX 1060) for the second monitor?

Regards Arndt

[duckbilled 310]

On my last couple systems, I have found that it does reduce performance when I use 2 monitors. How much will depend on the system. I have 2 2k monitors, and I unplug one of them and reboot before I fly.

Not to hijack this - I think this is still in the ballpark.

I'd like to add 1 4k monitor for P3D, but I want to keep my 2k monitors for work (like to have 2 identical monitors for data work). I'm running 1 GTX 980 right now and considering purchasing a 1080ti. Can I have both cards installed, 2k monitors connected to the 980 and the 4k connected to the 1080ti with only the 4k active when running P3D?

[brucewtb 249]

In short no.  I run two 4K monitors with a modest 980ti gpu and no difference in frames with or without the second monitor.

Bruceb