Wow, thanks for all the responses !! The motherboard I have will only support 3 cards, so adding a 4th (one reason for buying a bigger PSU) is
not really an issue. One of the reasons I was looking at this power supply is that I have a %20 off coupon that I need to use
for Microcenter and they currently have this power supply on sale: http://www.microcenter.com/single_product_results.phtml?product_id=0328088
So 69.99 - 20% + a $20 MIR makes it pretty economical. I am trying to put together a budget mining rig, but I want to use all new
parts. So far I have a mother board and ram at a current cost of around $5. My ultimate goal is 2mhash/$1 on the rig. Looks like it
is gonna be pretty hard to achieve.
I currently have a dedicated mining rig (4 x 5830s on a 1000W PSU) putting out 1.220ghash/s. Most people said a 1000W PSU was
Overkill for 4 x 5830s. So I was gonna try a 650W for 3 x 5830.
Thanks again for all the responses!