During all tests this power supply achieved ripple and noise levels within specs, but other good mainstream power supplies we’ve reviewed like
Antec EarthWatts 500 W and
Corsair VX450W achieved far better values here (below 20 mV on +12 V outputs, while on the reviewed power supply noise level at +12 V outputs were between 54 mV and 59 mV during test number four). Just to remember, all values are peak-to-peak voltages and the maximum allowed set by ATX standard is 120 mV for +12 V and 50 mV for +5 V and +3.3 V.