To learn how we measure ripple, please click here.
The following table includes the ripple levels we measured on the L11-CM-700’s rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).
|10% Load||5.7 mV||12.7 mV||11.6 mV||15.5 mV||Pass|
|20% Load||13.1 mV||17.4 mV||17.3 mV||18.5 mV||Pass|
|30% Load||16.6 mV||19.9 mV||21.5 mV||17.9 mV||Pass|
|40% Load||18.0 mV||21.9 mV||22.7 mV||11.4 mV||Pass|
|50% Load||20.8 mV||24.7 mV||25.4 mV||12.5 mV||Pass|
|60% Load||21.8 mV||26.2 mV||28.4 mV||11.4 mV||Pass|
|70% Load||24.1 mV||27.6 mV||32.2 mV||14.5 mV||Pass|
|80% Load||25.7 mV||30.9 mV||33.6 mV||15.6 mV||Pass|
|90% Load||33.3 mV||33.0 mV||36.5 mV||16.6 mV||Pass|
|100% Load||43.3 mV||35.8 mV||41.6 mV||18.2 mV||Pass|
|110% Load||59.6 mV||37.9 mV||44.4 mV||19.9 mV||Pass|
|Crossload 1||18.2 mV||27.5 mV||24.4 mV||19.3 mV||Pass|
|Crossload 2||39.0 mV||33.8 mV||37.5 mV||18.9 mV||Pass|
The ripple suppression cannot meet the competition in this price range, with both the Seasonic SSR-750FX and Bitfenix BWG750M units achieving much better results (with only exception the 5VSB rail where the BWG750M falls a bit behind).
The +12V rail goes close to 45mV under full load at high ambient, which is a satisfactory result, however the minor rails, especially 3.3V, clearly need more filtering caps.
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 0.01V) as the standard for all measurements.