Ripple Measurements
To learn how we measure ripple, please click here.
The following table includes the ripple levels we measured on the RX-700AT's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
|---|---|---|---|---|---|
| 10% Load | 18.8 mV | 14.5 mV | 14.5 mV | 11.4 mV | Pass |
| 20% Load | 13.0 mV | 15.8 mV | 15.8 mV | 13.9 mV | Pass |
| 30% Load | 15.5 mV | 16.7 mV | 17.1 mV | 14.3 mV | Pass |
| 40% Load | 19.0 mV | 17.3 mV | 17.2 mV | 15.2 mV | Pass |
| 50% Load | 23.3 mV | 19.3 mV | 20.1 mV | 17.2 mV | Pass |
| 60% Load | 20.9 mV | 20.2 mV | 19.9 mV | 20.3 mV | Pass |
| 70% Load | 24.1 mV | 20.6 mV | 23.9 mV | 19.4 mV | Pass |
| 80% Load | 27.7 mV | 22.3 mV | 25.9 mV | 21.7 mV | Pass |
| 90% Load | 31.7 mV | 24.0 mV | 25.2 mV | 20.5 mV | Pass |
| 100% Load | 36.0 mV | 25.4 mV | 29.1 mV | 23.3 mV | Pass |
| 110% Load | 41.3 mV | 27.0 mV | 30.7 mV | 23.8 mV | Pass |
| Crossload 1 | 18.1 mV | 19.6 mV | 20.6 mV | 14.9 mV | Pass |
| Crossload 2 | 36.2 mV | 22.8 mV | 26.3 mV | 21.1 mV | Pass |
Ripple suppression at +12V might not be as good as Super Flower's high-end platforms, but it's still very good. Ripple is fairly low on the minor rails as well. However we should mention that the Andyson N700 unit, based on the same platform as Raidmax's RX-700AT, registers significantly lower ripple on all rails under the same operating conditions.
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.