Pros and Cons of Digital PWM?

[virtualrain]

Thanks, back in my car audio days, we use to put a 1 Farad cap or more on the 12V line to the amps to help deal with transient power... would more capacitance on the 12V Rail that serves the CPU ATX connector be helpful in the PSU rather than on the board?

Any thoughts on my other question regarding why the DFI 680i LT may be shutting down under heavy load with a quad-core?