Quote from: fredeq on July 02, 2016, 11:35:17 AM

It doesnt make any sense that 6PIN cant deliver more than 75W.
Suddenly 2 extra cables give 75W more?
Also it seems the 2 extra cables are ground only, check the image:

For me it rather makes sense that some hardware on 480 is routing too much power from PCI-E, while it should just get much more from the 6PIN.

Honestly I have never mined with powered risers... I am using MSI boards with EPS12V (8PIN), maybe that saves my boards Tongue

The usual molex ones with basic resistor look so crappy to me that I am afraid to use them Cheesy

The usb ones look decent, but you say they are not that good?
Any good boards besides Asrock H81/61 Pro Btc that you can recommend? (to handle extra PCI-E power)

Ya we stray a bit ot from time to time. On the pcie. Reason the 8 pin can deliver more is the extra ground. If you have had a pcie burn it's usually the ground side. Since one wire is used to sense voltage and the other two are ground. That coupled with the fact most psu come with 3 hot wires in the 6 pin pcie. So it can technically feed more thru the 12+ then the ground can return. Yes there is some burnt off as heat but most comes back down the return. And if that isn't the same as the 12+ then you have meltdown. Seen this many times now and that's the best I came up with as to why the 8 pin can deliver so much more and doesnt add anything more other than two more grounds and another voltage sensor.

Best regards
d57heinz