will it run a single 570
According to NVIDIA's own specifications a single reference clocked GeForce GTX 570 has a Graphics Card Power of 219 Watts. This means it will draw up to 18.25 Amps from the +12 Volt rail(s) of the power supply unit. NVIDIA also recommends a minimum 550W or greater system power supply with a +12 Volt current rating of at least 38 Amps or greater.
For two GeForce GTX 570 in 2-way SLI a minimum 800W or greater system power supply with a +12 Volt current rating of at least 57 Amps or greater is recommended.
The Cooler Master Silent Pro Gold 700W (RS-700-80GA-D3) is able to provide 56 Amps on its single +12 Volt rail and should, in theory, be capable of handing two GeForce GTX 570 in 2-way SLI.