I like many of us will purchase (when I am able) a 3080 or 3090 or maybe an AMD 6000 series GPU.  My question.  Is there any advantage in repurposing my current 2070S to run monitors 2&3 (1080’s) used for viewing 3rd party apps and use my shiny new only for the G-Sync 1440 main monitor?

I will be using VR when it is implemented.  Google searching has revealed many and divided opinions.

Assuming that the 3rd party apps aren't graphically intensive and given that the 3080/3090 would crush 1440p (it's designed to run 4k) then I don't see much benefit. Have heard a bit about screen refresh issues but not something I've ever tried so maybe others with more experience with this can advise. If you're using graphically intensive applications like Blender then you'd see some gains putting them both to work. Easiest thing to do is just try it out once you get your new monitor and benchmark it yourself assuming they both even fit in your case and your PSU has enough juice to drive them both. My guess is that you'll end up selling that 2070S.

Poppapete,

Unfortunately for me, I have not used multi monitor set ups for a while now. (last time was in full time FS2004) I had three GPUs each driving 2 monitors (1080p) I always based my theory on the fact that if you are driving your main monitor on 1, biggest and best, GPU just for MSFS and utilise the second monitor on your second best GPU ie each GPU driving one monitor, your best GPU is delivering full performance for the sim. The other monitor would be used for Flight programming (Simbrief or similar) Moving maps, ATC, outside views etc, all of which do not have a huge impact on the actual sim performance.  Whether or not performance is a factor with MSFS is an unknown for me, but driving more than 2 monitors was an impossibility with FSX and P3D  because performance dropped significantly and incrementally with the addition of each monitor.  FS2004 was the only sim I could use multi monitors on the one computer and multiple GPUs

The good thing about the use of the extra monitor/s is that your sim is not totally blanked out by you wanting to bring up a moving map during flight for instance. There are very definite advantages using this system.

As far as I can see, you would be wasting your time if you are using or going to use VR as you would have to take your headset off in order to look at your second or other monitors. I state this with absolutely no experience with VR, even though this is the route I want to take eventually.

It would be very interesting to follow your final decision and progress with this project. I am with Tektolnes though, in that, you will end up selling the 2070, most particularly if you progress down the VR path.  

Please keep us informed mate.

Tony