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FSP Hydro G 650 Power Supply Review

FSP recently released a new PSU platform that mostly addresses gamers. The Hydro G line includes three units, and today we're testing the 650W version. The PSU is 80 Plus Gold certified and features fully modular cabling. Let's see how it performs.

Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the Hydro G 650's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load5.9mV6.3mV5.4mV11.1mVPass
20% Load26.4mV5.7mV7.4mV10.3mVPass
30% Load20.2mV7.0mV8.0mV14.2mVPass
40% Load20.1mV11.1mV9.9mV15.9mVPass
50% Load20.3mV12.4mV10.2mV18.5mVPass
60% Load19.8mV11.0mV10.8mV13.7mVPass
70% Load20.0mV11.6mV12.2mV18.6mVPass
80% Load20.1mV12.9mV13.5mV19.8mVPass
90% Load21.0mV14.0mV14.4mV20.3mVPass
100% Load22.6mV14.6mV16.3mV22.5mVPass
110% Load24.9mV16.3mV17.7mV22.6mVPass
Cross-Load 121.5mV7.8mV8.3mV9.9mVPass
Cross-Load 222.3mV10.2mV16.6mV15.1mVPass
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Ripple suppression is very good on all rails. It might not be up to the level of Super Flower's power supplies, but we can still call the Hydro G 650 a ripple-proof PSU that totally covers the needs of enthusiasts looking for clean voltage outputs.

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

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Ripple At 110-Percent Load

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Ripple At Cross-Load 1

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Ripple At Cross-Load 2

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