Crystalmark is a useful benchmark to measure theoretical performance levels of hard drives and SSD’s. We are using V3.0 x64.
The Samsung 850 Pro is quick, but it isn't the fastest SSD, and M.2 drives are providing as much as twice the bandwidth. That said this is a decent drive for a boot and application disk, and the 512GB capacity should be more than enough for the lifetime of the system, despite software bloat.
The 2TB Seagate Barracuda 7200.14 is pretty quick for sequential reading and writing, so as a storage device for audiovisual data it will be very decent indeed.