Ripple Measurements
To learn how we measure ripple, please click here.
The following table includes the ripple levels we measured on the XP1200M's rails. The limits, according to the ATX specification, are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
|---|---|---|---|---|---|
| 10% Load | 23.9 mV | 7.1 mV | 9.3 mV | 5.5 mV | Pass |
| 20% Load | 16.0 mV | 7.8 mV | 11.3 mV | 6.5 mV | Pass |
| 30% Load | 17.6 mV | 9.2 mV | 12.3 mV | 7.3 mV | Pass |
| 40% Load | 21.1 mV | 10.0 mV | 12.8 mV | 7.9 mV | Pass |
| 50% Load | 24.8 mV | 12.1 mV | 13.5 mV | 10.0 mV | Pass |
| 60% Load | 25.4 mV | 13.7 mV | 15.5 mV | 10.4 mV | Pass |
| 70% Load | 26.3 mV | 14.3 mV | 18.7 mV | 12.3 mV | Pass |
| 80% Load | 29.3 mV | 17.1 mV | 20.5 mV | 13.0 mV | Pass |
| 90% Load | 32.5 mV | 17.8 mV | 20.9 mV | 15.0 mV | Pass |
| 100% Load | 35.8 mV | 20.6 mV | 22.7 mV | 15.8 mV | Pass |
| 110% Load | 39.6 mV | 22.6 mV | 24.4 mV | 17.9 mV | Pass |
| Cross-Load 1 | 28.2 mV | 9.3 mV | 12.7 mV | 5.8 mV | Pass |
| Cross-Load 2 | 35.6 mV | 20.7 mV | 25.1 mV | 16.0 mV | Pass |
Ripple suppression is pretty good on all rails. Because the competition in this category is really tough, Gigabyte's XP1200M doesn't place higher in our comparison charts. Still, this doesn't change the fact that Enhance fares well.
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 0.01 V/Div (each vertical division/box equals 0.01 V) as the standard for all measurements.
Ripple At Full Load
Ripple At 110-Percent Load
Ripple At Cross-Load 1
Ripple At Cross-Load 2