I just got a Dell Optiplex 755 Core 2 Duo 2.33ghz with 8gb ram, 120gb hard drive, 1gbit ethernet, and running Server 2012 R2 Standard as the OS for the domain controller. Will this system be sufficient as a full time domain controller for a home network on this OS? I hope it's fast enough to do what's needed. I also plan to remotely manage it. The computer was $150 as configured, including the ram I had to order for it. It's not ECC ram, would this be a problem?