system recommendations for RT

[ALFRED_ST_MEDIA]

We're looking at new systems in the new year, and would greatly appreciate input from the community on what works/doesn't work, mainly for RT. Considering the current task at hand has a massive amount of geo and textures, I'm thinking CPU RT, which seems to be the general consensus anyway. My thoughts where as follows:

six-core i7
24GB RAM
quadro 4000

Vlado? anything to add?

Thank you all in advance.

-ctj