Quote from: booradlly on August 11, 2014, 06:11:19 PM

Quote from: allcoinminer on August 11, 2014, 08:33:13 AM

Quote from: jimmothy on August 11, 2014, 07:53:24 AM

Quote from: allcoinminer on August 10, 2014, 08:24:43 PM

The two black lines in the 4 lines is COM, the yellow is +12VDC(pin 1) and the red is +5VDC.
There is no problem in using them as your second PCI power cable to S3 blades.
The double PCI power connectors on a single PCI cable will not serve the purpose.
For this CX500 power supply connect the PCI power cable(6+2) to each blade.
And if you want to connect all the four PCI power ports, use 2 molex to pci to connect one each blade as secondary.

Using molex as pci-e cables is a great way to get melted wires.

Also I don't think there is anything wrong with buying a PSU without an extra 25% safety margin.

Take a second look, Its auxiliary for the second. I wonder whats wrong with it.
My Sapphire GPUs even came with this kind of molex->PCI-E for the second power slot.
I'm using it since last 4 months for ASICs and earlier for GPUs. They will not even get hot.
Wonder how to add extra safety margin by buying a new PSU.
No PSU will give enough PCI Slots enough to connect 4 ports of S3.

EVGA Supernova says hi.
http://www.evga.com/Products/Product.aspx?pn=220-G2-0750-XR

Also, not disagreeing or agreeing with you, but just because there is a cable available doesn't mean the cable should be used. Only reason I mention this, is because you seem to be implying it, and I don't think you mean that.

I don't understand what you exactly meant.
The use of cable is up to the user. If anyone is concerned in using that cable as an auxiliary in S3,
I recommend not to use and go for a power supply unit which provides enough PCI power slots.
The primary aim of this thread is not let others understand how to size a power supply for their DC Devices.