Hey guys, so I've decided to go with 2 x 5970s per rig after all. It turns out that I can build a minimal box for less than $200 per card that way (i.e., less than $400 total allows me to run 2 cards).

How much PSU do I need for 2 x 5970s and minimal other hardware? (Sempron 140 CPU, 1 GB DDR3 RAM, etc...)



Edit: How about something like this? http://www.amazon.com/Corsair-Enthusiast-Certified-compatible-platforms/dp/B004MYFODS

It's got 70A on a single 12V rail.