Your post is one of precious few on this topic, which I expected to generate many more opinions than it did. Did increasing core-count improve your svreg times significantly? Did you put in a beefy GPU in your build, and can you tell if it is being used at all? How much RAM did you put in, and can you tell the utilization on that?
I’m in the same boat, building a new system specifically to run BrainSuite as fast as possible. I’ve got budget, but no matter how much budget I have, I still need to figure out whether to spend it on cores, RAM, or GPU, so I’d love to learn from your experience if possible.