of the 300W, how much 12V? you need about 16-20A of 12V per blade if not overclocked, and 20-24A per blade if overclocked
Scratch that
Just found a bunch of hp server power supplies
82.3 amps on 12 volt line
So one power supply per antminer s1 system
Interesting thing about the specs
At 110v the 12v line only puts out 70A, while drawing 10 amps from the wall socket
But at 220v it puts out 82.3 amps, and drawing 6.7amos from wall socket
Good thing I have both options in the server room
FYI the power supply is model DPS-800GBA