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Ripple Measurements
To learn how we measure ripple, please click here.
The following table includes the RM550x's ripple levels. 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 | 4.2mV | 7.0mV | 5.2mV | 8.3mV | Pass |
| 20% Load | 4.8mV | 7.2mV | 5.3mV | 8.0mV | Pass |
| 30% Load | 5.4mV | 7.3mV | 5.4mV | 8.1mV | Pass |
| 40% Load | 6.3mV | 7.3mV | 5.9mV | 8.1mV | Pass |
| 50% Load | 7.0mV | 7.6mV | 5.9mV | 8.5mV | Pass |
| 60% Load | 7.4mV | 7.8mV | 7.2mV | 8.5mV | Pass |
| 70% Load | 7.0mV | 8.0mV | 8.2mV | 8.6mV | Pass |
| 80% Load | 7.5mV | 7.9mV | 9.1mV | 8.8mV | Pass |
| 90% Load | 8.2mV | 8.2mV | 9.4mV | 9.5mV | Pass |
| 100% Load | 8.9mV | 9.2mV | 11.3mV | 10.3mV | Pass |
| 110% Load | 9.6mV | 9.2mV | 12.5mV | 10.5mV | Pass |
| Cross-Load 1 | 6.3mV | 8.4mV | 7.4mV | 9.2mV | Pass |
| Cross-Load 2 | 8.7mV | 8.8mV | 12.2mV | 9.3mV | Pass |
Ripple performance is jaw-dropping! The RM550x easily matches Super Flower's high-end platforms. Corsair uses every trick in the book to offer the lowest possible ripple, and its results justify that effort.
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.
Ripple At Full Load
Ripple At 110-Percent Load
Ripple At Cross-Load 1
Ripple At Cross-Load 2
