This might be a dumb question, but... here it goes any way. 
 
Of the three SuperNova power supplies I own, I want to switch two of them. 
 
One is an 850w G2 and the other is a 750w P2.  Are the modular cables that come with each power supply physically and electrically compatible with the other?  
 
Obviously I can check whether or not they'll physically fit into the connectors, but that's a bit of a to-do.  However, I don't even want to try it if they aren't electrically compatible, so I figured I'd just ask about both aspects. 

Hello,
 
as I am sure you are now aware the cables would have identical pin-outs on both your 850G2 and 750P2. Infact all out our G2, P2 and T2 models have identical pin outs so you can share cables as you see fit.

kezown

MDeckerM
Hello,
 
as I am sure you are now aware the cables would have identical pin-outs on both your 850G2 and 750P2. Infact all out our G2, P2 and T2 models have identical pin outs so you can share cables as you see fit.

 
I recently bought the Cable set for 550/650 (100-G2-06GG-B9). I have the superNOVA 750 G3. Will these cables fit my PSU and is it safe to use in my system? I was under the impression that there were just more cables in the cable set for 750/850 (100-G2-08GG-B9)

https://www.evga.com/supp...mmain.aspx?faqid=59698