Chimera
The old gpu is an aberration and odd place to skimp. If he upgraded to a newer nvidia gpu it would have linux driver support and he could ditch windows entirely
And if he wasn’t married to arcgis he could just get a mac studio
ArcGIS is the best general purpose solution.
If doing mission planning including flight guidance for aerial operations, FalconView is the least worst.
Telling an experienced GIS user to drop ArcGIS is like telling a somehow-still-living B.B. King to stop using Gibson guitars.
And by "better supported" he probably meant "isn't a huge pain in the ass that breaks every other kernel upgrade due to dkms or the package manager shitting the bed" when it comes to Nvidia drivers. Doesn't matter if it's a 1080ti or a 5090.
Is it in any way relevant?
I chose not to write it earlier but my candid thoughts were that he seemed too old to still be doing this. Its just younger enthusiasts and professional gamers that do this, and the younger enthusiasts eventually get enough money for a mac and choose that.
The PSU is completely overkill, as if he was going to get GPU's. But then he has this completely outdated and old, power inefficient GPU in it instead, which is nothing to brag about and doubly warrants an explanation if the rig is to be explained at all. All while newer GPU's from the same company solve all of his driver and OS problems.
Flabbergasted is the right emotion.