How to power the Bitmain Antminer C1? Bitmain has a new miner out that is pretty cool (water cool to be exact) called the Antminer C1.

I have an S1 so I am familiar with the basic operation of the Antminers. However, I'm a bit baffled that it has eight PCI-e connectors for power. I've never seen a PSU with eight PCI-e connectors. I'm not sure how I would power this thing effectively if I got one.

I found a great setup guide, but it doesn't go into detail with the power setup.

Here's a picture of how the connectors are set up:



Here's my questions:


The C1 requires that at least four of the PCI-e connectors are used. Which ones then are the important ones?
It is recommended that your PSU be at least 800 watts. Is that correct? Is it different if you only power it through four connectors?
Is it possible to use two or more PSU's to power the miner? For example, I have tons of 300 to 500 watt PSU's that have at least one PCI-e connector. How might those be useful to me?
Do they even make PSU's with eight PCI-e connectors? What is the best solution for a single PSU to power all eight connectors?
AntMiner C1 Manual:


  You must prepare your own ATX Power Supply. There are 4 PCI-e connectors for +12V DC 
  input and all are required.


That either means:


The manual is right, and some of these are not 12V connectors. This seems unlikely.
The manual is wrong, and you need eight 6-pin PCI-e connectors.



  Is it possible to use two or more PSU's to power the miner? 


It depends on how they designed the miner. Those connectors might join together inside the miner, which would mean that you'd want one power supply, or they might be two separate circuits, which would mean it would be more or less safe. Generally, you don't want to use two power supplies to power the same part, though. Can you take a picture of those connectors with the case off?

As for the power supply recommendation - power supplies with eight PCI-e are very expensive, primarily because nobody needs that many. I mean, a typical desktop computer is probably going to need one PCI-e connector. They do exist, though.

However, I would recommend getting two power supplies with four PCIe connectors. I suggest the Cooler Master G650M.

Oh, and the manual says this, which suggests that it's not water-cooled out of the box:


  Cooling kit is not included in C1, please read the instruction at www.bitmaintech.com to 
  buy them.