Our setup consists of (6) S5 Units per Cluster - all within the small space of a 30" small wire shelving unit.
Our Miners are set at frequency 393.75.
We are achieving 1300+ GHash per Miner; no "X"s; and with only a single Delta AFB1212SHE Replacement Fan.
We are not using any sort of water cooling or push pull; just a single fan. Temps are constant at 52-56 C in a 69-72 F Room.
We've been grouping 6 units together on a 24x30x14 Small Wire Shelving Unit which can be purchased at HomeDepot / Target for roughly $20.00.
The config illustrated here uses (3) EVGA 1300 G2 PSUs, with (2) S5 Units on each PSU. This particular setup will limit your overclocking ability due to the PSUs power limit. With this setup I would not recommend going over 362.50.
However, this same setup can be used with a total of (4) 1000w PSUs running 393.75 - simply by running (3) S5 Units on (2) PSUs each X 2. Simply Mount all 4 PSUs on the outside of the shelving unit - rather than the 3rd 1300w in the middle. Please note that the Pink Circles and Lines note Zip Tie Points.
We'll be publishing our additional guide on maximizing your mining hashpower; and improving your mining power by up to 15% by simply running an additional script and light weight software package. That guide will be posted later this month!
Cheers!
Strato