I've built one other computer in my life, and that was well over 15 years ago, and after this build, I can say that experience doesn't count.
The main goal for this build was to get familiar again with building a computer, as well as having fun experimenting with the overclocking potential of the G3258. Also, I wanted a pleasant looking HTPC in the living room so we can stream from XBMC or other services- and be able to handle my STEAM library of games whenever I get a chance to actually play them.
I found I didn't have the patience like I thought I would when it comes to dialing in an overclock. But I've had a very good luck with the settings at 4.2ghz, which yielded a 25% increase over stock- which I'm very excited about.
CineBench R15 CPU score increased ~26%. When the system was stock it scored a 234cb. Overclocking to 4.2ghz scored 313cb. Both results were an average of 5 runs. I'm sure at some point in time I'll try to get beyond 4.2ghz but for what this box is made for, it will do just fine.
CineBench R15 OpenGl test scored a nice 113 frames per second from a 5 run average. I haven't looked into overclocking this graphics card and after the headaches of getting the processor dialed in, I'm not sure I want to.
This box will eventually evolve into a home server too, as the node 605 has room for multiple HDDs.
I honestly can't wait to start using this as the entertainment device it was meant to be and add on to it when the time comes.
I would appreciate any feedback as this was a learning process for me and it will only help me for the next go around.