Question Using two different GPUs ?

[rAiN Twist]

Hello there, I’ve found some similar posts but nothing quite like this. I have a MSI RTX 3080 Trio, and a MSI GTX 960 4gb and I’m in the process of building a 1:1 scale A320 flight simulator for MSFS 2020 and it has 5 monitors for the main display, with a possibility of 8 monitors total for the glass cockpit instruments. I’m aware that only 4 monitors can be run off a single Nvidia card so I was planning on incorporating my GTX 960 to connect the extra displays, but I want all the GPU power coming from the RTX 3080 for all displays.

I read something similar before about someone doing it by accident because they were trying to use their second card as a completely separate gpu to watch YouTube while they used the main GPU for games or whatever at the same time. I know it’s possible I just don’t know how to incorporate it all.

CPU: i9 10900k
Motherboard: Asus Z590
Ram: 32gb DDR4
GPU 1: MSI RTX 3080 Trio
GPU 2: MSI GTX 960 4gb
Storage: 4x1tb WD Blue/512gb SSD
PSU: Corsair AX1200i