670 watts
670/1300 = .515 watts per gh
one thing I like about the s-5 is the power is between .49 - .52 watts.
I tested from freq 200 to freq 412 .
I also think that if you tossed 13
volts at this and used 2 killer fans to kool the gear you could do freq 450 .
In this sense the s-5 is better then the sp20.
My problems are the s-5 does not fit as well as the sp20 in my garage setup. I will run my s-5 at freq 300 . I will use 2 delta fans and 5.5 volts per fan.
If the s-5 had the s-3 case I would have grabbed 5 to 10 or them.
I am going to try to run the deltas with 4 pins tomorrow . Hook them direct to the s-5 . See if I get the pwm to work.