rijinpk1
Aspiring Novelist
As far as I've read it's mostly the Antec PSU's with active PFC that do the nagging with non-pure sine wave inverters.
I am using an antec psu with pseudo sine wave ups without any problems so far. Pure sine wave ups are extremely costlier. Pseudo sine wave apc ups will work good with active pfc psu. Local ups may create some problems as some low cost ups just give a square wave instead of stepped sine wave which is not good.