My mini rig:
3x Spondoolies SP20 - reversed fans (improved cooling), rotated (for horizontal heatsink layout)
3x 1200W HP Platinum server PSU - directly soldered short PCI-E cables
1x R-Pi - powered by 12V/5V car DC converter
Located at "guest hosting" at no cost but with power usage and noise limit (office).
You could replace those 3 boxes and 3 psu's with 1 Avalon6 for the same hash rate.
