Rebuilding unraid, need some advice

[intertan]

Right now I have unraid running stable and all is good.

I have a new job that takes me out of town a fair amount so I need to run plex so I can keep up to date on my tv shows.

 

My current set up is as follows

1 unraid machine i3 2100t

1 i5 that is my main pc and plex server.

 

I have 2 thoughts

1 is build a machine to have both unraid and a plex serve rplus all the nzb/torrents stuff

Or have the plex in a separate machine

My bandwidth situation

I am on dsl at the moment, They say my isp will be upgrading my area this year to fiber, I will be getting the maximum connection at 60Mbps upload.

Not only will I trans code to my self, but my parents and sister, I am gonna divvy it up so plex uses no more than 40Mbps of my upload bandwidth. there abouts.

 

I am looking at xen but haven't spent much time reading up on it.

I would like to have unraid run and a separate plex and nzb stuff as in the past I have had issues running the other stuff as well as unraid.

Hardware I am mainly wondering if running a xeon processor is any better than say a i7, and is more cores better or more speed per core? what about dual socket? can plex utilize both sockets?

I may use this to run other stuff so I want it to be a little beffy