Also, if someone was interested in picking up some PSUs/Mobo/5850s from me, that would possibly nix the need for the loan.
PSUs still available?
Yes, off the top of my head I have ~600w, ~750w, ~850w, and either a 900 or 1200, I can't recall the exact level of the last one.
Can't use the 600w... but I need a total of 4 to power a 10 GPU mining rig for alt coins. 5 GPUs per mobo; I'm advised to get two 850w for 5. I don't know crap about this power stuff; not sure if I can combine the 600w with the 900/1200w or what. Guess I need to get some consultation. What are you asking?
You can run multiple PSUs on one setup, for example, main PSU powering mobo, some cards, CPU, and a secondary PSU plugged into the additional GPUs, so yes, that is possible.
What cards are you using? Depending on their wattage, you might not need that many PSUs per grouping of GPUs.