Quote from: kminer on March 01, 2015, 10:03:43 PM

Quote from: Stratobitz on February 04, 2015, 03:18:58 PM

This is a simple outline / guide on how we are running our Antminer S5 Units in clusters of 6 with no overheating issues and a decent overclock.

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

Statos, could you elaborate on the wiring required to power two S5s on one EVGA 1300 G2? I see you have two red lines and two blue lines running to each S5. I assume the red are straight PCIe 6 pin cables and the blues that a red port and split them into two. What cable do you recommend?

Also, I thought I read somewhere that each S5 PCI-e connectors required +12V DC input / 15 amp, or 60 amp for each S5. That would be 120a to power two S5s, but the EVGA 1300 list a max output of 108.3a on the +12v line. Is that right?

Thanks

The EVGA 1300 G2 comes provided with (6) Red 8 Pin to 6+2 Pin PCIe Cables.

Our units are configured so you use all 6 of the cables for (2) AntMiner S5 units by using this cable path per miner:

- Use (2) dedicated 8 Pin to 6 Pin PCIe cables - running one to each blade (left and right side) - total 2.

- Use (1) shared 8 pin to dual 6 pin PCIe cable - running one end to the left and one to the right.

This is working well for us; with the box fan configuration the cables do not even get a hint warm.

Unless I am mistaken; this provides the best power configuration as it allows a full load on 1 cable, and a shared load split between the two blades on the other. My thought is running 1 blade on a single cable (split) puts the full load of that blade on a single cable (might overheat).

So as for my diagram; PLEASE NOTE it's a single blue line that splits - denoting a cable that is using both heads of the output end split across the blades; and the 2 reds are dedicated wires - one to each blade.

As for the amperage; I'm a little bit of a neophyte when it comes to power calculations. The PSU outputs 12v; and running (2) S5 units on (1) 1300 G2 PSU - at a frequency of 350 or 362.50 will not overload the PSU or a 20 AMP Breaker (15 is likely ok as well but all my breakers are 20AMPs). Going off memory... I believe my Kill-A-Watt showed roughly 1190 Watts off the Wall running 362.50. (Again off memory). They've been running for weeks just fine.

I did initially try to set the miners at 392.50 but the PSU would click off and take a while to reset. Factoring the ROI on simply not overclocking as high - I decided to go this route rather than add more PSUs which would never re-coup the costs.

We also run our own Proxy Servers; so these units work great. Literally I go weeks without really doing anything to them... except seeing the BTC add up in our wallets.

Hope that helps!

Strato