Hi guys, I've never built an PC before, but am looking to upgrade my current computer, an Mid-2010 iMac 27" (http://support.apple.com/kb/SP588i3 3.2 ghz, upgraded to 16GB Ram). Ideally I'll be using it for ZBrush, Maya, Ndo2/DDo and possibly Mari. I'm not looking for anything too high end, but if it can play games fairly…