I don't see why anyone bothers with companies like these that just assemble off the shelf components in what's very obviously a Fractal Designs Define case. Just basic assembly that you could do yourself, pointless IMO.
You want a machine with actual workstation features; HP or Dell with their super easily hot swappable PSUs, tool free disassembly, and workstation geared enclosures and onsite repair etc.
I guess if they offer a decent warranty... but still silly IMO.
Not to argue the outdated specs of the nMP - but once updated, it's small demeanor allows it to be easily shipped in for repair if necessary if one of the many Apple Stores aren't nearby, and with HP or Dell you have onsite techs within hours/days.
With this, need to change out the CPU? Have fun with that liquid cooling loop, or shipping it in for service. Same with the GPU.