What is the current standard build?
#1
After browsing the hardware forums I found a standard build from March of 2013, is there a newer standard build?

I'm currently set on 4 x 7970's, I'm not set on anything else. This build will be rack mounted ideally.

Any advice would be appreciated.
#2
things haven't changed much since then. are you looking for something for personal use, or for professional use?
#3
Professional
#4
most of the advice you'll find on the forums (including advice i provide) is largely using desktop hardware, which may not be ideal for professional use.