To be fair to RoadStress, I used $180 PSUs in my calculations and the price of bitcoin is fixed at 500 USD/BTC. Also, 2000W wouldn't be enough to run 2 Prismas. I don't know whether those server PSUs have the necessary PCIe cables so I was hesitant to use them in the calculations.
Can you provide some links to those products (DPS-2000BB/breakout/cables) so people will know what to look for?
Why not use 400 USD/BTC as it is right now? Is your magic crystal ball letting you know that in 1 month the exchange rate will rise?
Ah, I see. Those are extremely poor numbers. The Prismas are a hair under $6000 right now, so that's factoring in $3250 for 10kW of power supply which is ridiculous. Even if you don't want to mess with server PSUs, you could go buy 10 well reviewed gold ATX supplies (RM1000/Capstone 1000M) for $1500 shipped from Newegg (plus tax, if you're unlucky).
Ok, with the updated numbers you will have an advantage of $1500 for all lifetime mining profits for buying AM Prismas vs 2xSP35 at the cost of needing a bigger electricity circuit.