The best option for Adobe Premiere Pro,would put the fastest SSD for the Project files and I do not know which drive would be faster as you have not specified either yet.
The 950 EVO comes in two form factors/interfaces SATA III and M.2. The M.2 is much faster than the SATA III but some doubts your motherboard could use it, although a few AM4 motherboards do have an M.2 connector
there is no 950 Evo, there is a 950 pro or an 850 evo or 960 evo. if you are talking about the 850 evo its the same as a sata ssd, even if its using the m.2 form factor, and would fit with setup #1. if you are talking about the 950 or 960 they will be much faster and best used for multiple functions, like the samsung evo in your setup #2.
My fault! :/
I was talking about the m.2 960 Evo
Motherboard is asrock ab350 pro4. It has 2 m.2 sockets, 1 sata interface and 1 fast for the 960 evo or 950 pro
thanks for the answers!!
Sorry about that I got confused and on 950/850