I built one not so long ago : I7 3770, HD7950, 8GB RAM, 1TB Hard Drive,ROG MAXIMUS V GENE. (1217e) Thing is if you want to build a new rig keep in mind that the 780 cost around 600€ That would be the most expensive part, Also think about the power supply and the case. Its not that hard to build it yourself nowadays, Everything just clips. Also you might want to use a Quadro or a firePro for your rendering needs, that will be better. I have been doing 3D on a netbook, didn't prevent me from doing anything, so having the best technology time offers, will be only good for gaming at high settings.