cosmowe wrote: ↑Mon Mar 15, 2021 17:53
Adding any mst hub like matrox or datapath is not a option .
Datapath isn't a typical MST hub, it has internal processing and sync boards unlike the cheap usb MST hubs that have given MST hubs a bad rep
If he doesn't want to go that route, he can get 3 RTX 5000 cards and a nvidia sync card. That's about $9,000 in cards, but then you also need a CPU and MOBO that supports over 50 PCIE lanes, so you're looking at Xeon or threadripper builds, so add another $3k+ to the build, then, you need to send Display port to projectors, so that'll be DP to Fiber cables x9, so add another thousand or so to the build.
So if he has $15-20k to drop on this, you can try this method, I would advise water cooling and a large case with fans.
Or maybe give the FX4 a shot first before doubling your build cost. Just my 2 cents