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).

Setup:

• Fan speed limited - manually set at minimum speed
• Hashing speed limited - adjusted to keep chips running under 115c
• Scheduled to stop mining during office hours - using unique Spondoolies Voltage Scheduling
• Remote control with Raspbery Pi with RealVNC and Weaved - zero local network config
• Total hashpower: ~3.2 TH/s - quiet & cool.