Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
Ripple Measurements
To learn how we measure ripple, please click here.
The following table includes the ripple levels we measured on the rails of the EVGA 550 G2 unit. 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 | 4.7 mV | 5.9 mV | 6.1 mV | 5.0 mV | Pass |
| 20% Load | 5.8 mV | 8.2 mV | 9.4 mV | 5.9 mV | Pass |
| 30% Load | 6.1 mV | 8.4 mV | 10.6 mV | 6.3 mV | Pass |
| 40% Load | 6.5 mV | 8.4 mV | 10.2 mV | 6.5 mV | Pass |
| 50% Load | 6.5 mV | 8.6 mV | 10.4 mV | 7.0 mV | Pass |
| 60% Load | 6.8 mV | 8.6 mV | 10.8 mV | 7.1 mV | Pass |
| 70% Load | 6.9 mV | 8.7 mV | 11.5 mV | 7.3 mV | Pass |
| 80% Load | 7.5 mV | 9.4 mV | 11.6 mV | 8.2 mV | Pass |
| 90% Load | 7.7 mV | 9.9 mV | 11.8 mV | 9.4 mV | Pass |
| 100% Load | 7.9 mV | 10.1 mV | 12.4 mV | 12.2 mV | Pass |
| 110% Load | 8.0 mV | 10.3 mV | 12.5 mV | 12.4 mV | Pass |
| Cross-Load 1 | 6.1 mV | 8.7 mV | 11.5 mV | 10.6 mV | Pass |
| Cross-Load 2 | 7.8 mV | 9.7 mV | 11.6 mV | 9.8 mV | Pass |
All Super Flower implementations are ripple proof, and this PSU is no exception. Actually, ripple suppression on the 550 G2 is jaw dropping, with less than 10 mV at +12V, even in worst-case scenarios. And on all of the rest of the rails, ripple didn't even reach 13 mV. Ripple suppression is one of the most crucial factors for PSUs, and the SuperNOVA 550 G2 is among the best-performing PSUs money can buy today.
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
The Samsung 990 Pro 4TB heatsink edition is now only $289 at Amazon
Today is 3D graphics pioneer 3dfx's 24th death anniversary – platform still inspires gamers, enthusiasts, and makers long after Nvidia acquired the assets
A new PCB design can boost heat dissipation by 55x – copper coins placed under heat generating components drop temps drastically
