For those looking at building an open frame rig I thought it would be worth passing this on.
Go to ebay and search for "80/20 quick frame" (no quotes). That will take to the 80/20 inc. list of quick frame products. This stuff is great for building an open frame rig and the Aluminium extrusions can be purchased with a 1/4" lip for mounting the bottom edge of the PSU, fans etc.
I built one with 8 7970s, 4 850w PSU, and two motherboards. It does 6MH on litecoin.
I hope this helps others.
Greg
That looks awesome, but isn't the spacing between the video cards pretty small? How are your temperatures going after a day or so, and what cooling are you using right now/ambient temperatures?
And what is the cost of the frame?