To learn how we measure ripple, please click here.
The following table includes the ripple levels we measured on the TPG-1200D-P's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).
The 5V and 5VSB rails feature the best ripple suppression. The +12V rail also fares well, although it cannot compete with Super Flower's offerings at similar capacity points. Lastly, the 3.3V rail demonstrates the worst performance with close to 30mV ripple during the full load test. Enhance should lower the 3.3V rail's ripple and take +12V below 30mV since the competition (see EVGA SuperNOVA 1200 P2) is ripple-proof.
Ripple Oscilloscope Screenshots
The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.