So in practice, each PCIe6+2 output is powering 3 cards and each SATA output is powering 3 raisers.
I could replace the SATA connectors on the raisers with molex connectors that probably can handle more power (I will try this now), but I see that my best alternative is to put another PSU adding more PCIe 6+2 outputs
Hi WaveFront,
I am using the same MB with 11 Zotac 1070TIs and Server PS.
To get a better understanding of the power distribution I was measuring some parts.
In my case the risers are using 25W each - means 2Amps
Most PS having a chain of 5 SATA connectors on each channel - this is more than the wire can handle.
As you have only 3 connector areas for each voltage range at the SATA connector, it would be 0,7 Amps for a single connector area which is IMO quite high - as we are using it 24 hours a day.
3 Risers is IMO the maximum and to change to Molex is not bad ;-)
I have my cards limitted to 130W - the whole system is using 1800W, which is an additional power consumption of 370W for the rest of the system.
Now that we are in power discussions, I have a question too.
Is it mandatory to connect the additional molex connectors on motherboard to psu?