Glad it's coming along. It really depends on a number of factors, especially the number of clients being active at the same time and the files/formats being viewed. Some files, depending on codec and compression/encoding quality will cause more CPU load to transcode than others. Direct stream to clients will of course result in the least CPU load on the server.
In my opinion and looking at the average benchmarks for that CPU I would think it should do fine if transcoding to two clients at the same time (possibly even 3). If you had one client transcoding and another two or three direct streaming my guess is it would mange ok too. The More clients running/viewing in parallel the more resources you are going to need.
If you are only likely to have one or two clients on at a time then I am certain your system will be fine
If you have ripped media already could you not do a basic set-up of emby just to test things out? It wouldn't take too long to set the windows server application up in it's raw form, create yourself just a small library folder with only a small handful of media to start with and install a couple of clients for parallel testing.
Edited by Olywa123, 19 November 2015 - 06:20 PM.