The PSU would need to plug in to a power distribution board even if it is for the older C6100s. It would be interesting what that may look like and if that would be easier to use than the one in the steadily srinking stock of newer C6100s.
That PSU is for the older LGA771 C6100.
Also it's not standard ATX, sure it's cheap and there's plenty of those, but why bother?
With power board you mean which one? The backplane which the C6100 nodes connect to?
The one the PSU would connect to in the older C6100s. It would be interesting what that may look like and if that would be easier to use than the one in the steadily srinking stock of newer C6100s.
The advantage would presumabily be more 12v lanes, small form factor allowing for a smaller case and no step-up to convert 5v to 12v to satisfy the motherboards demands.
Also, do you have a basic wiring diagram of your setup above, pref with connector part numbers ?. That would be great for anyone looking to put this together for themselves. Personally, finding the plug / socket connectors is probably the most difficult.
Thanks
RB