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EVGA SuperNOVA 650 G3 PSU Review: Excellence Evolved

Load Regulation, Hold-Up Time & Inrush Current

To learn more about our PSU tests and methodology, please check out How We Test Power Supply Units. 

Primary Rails And 5VSB Load Regulation

Load Regulation testing is detailed here.

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Hold-Up Time

Our hold-up time tests are described in detail here.

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The hold-up time we measure is over 17ms and the power-good signal is accurate.

Inrush Current

For details on our inrush current testing, please click here.

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Measured inrush current is at normal levels.

Load Regulation And Efficiency Measurements

The first set of tests reveals the stability of the voltage rails and the 650 G3’s efficiency. The applied load equals (approximately) 10 to 110 percent of the PSU's maximum load in increments of 10 percentage points.

We conducted two additional tests. During the first, we stressed the two minor rails (5V and 3.3V) with a high load, while the load at +12V was only 0.1A. This test reveals whether a PSU is compatible with Intel's C6/C7 sleep states or not. In the second test, we determined the maximum load the +12V rail could handle with minimal load on the minor rails.

Test #12V5V3.3V5VSBDC/AC (Watts)EfficiencyFan SpeedPSU NoiseTemps (In/Out)PF/AC Volts
13.532A1.995A1.989A0.991A64.80485.234%1355 RPM33.5 dB(A)38.04°C0.944
12.233V5.018V3.312V5.045V76.03143.21°C115.10V
28.090A2.980A2.984A1.191A129.78189.126%1368 RPM33.9 dB(A)38.23°C0.965
12.230V5.019V3.312V5.038V145.61643.68°C115.10V
312.990A3.487A3.498A1.391A194.92890.474%1392 RPM34.4 dB(A)38.57°C0.980
12.228V5.020V3.312V5.030V215.45144.27°C115.10V
417.882A3.984A3.982A1.591A259.80190.904%1406 RPM34.4 dB(A)38.89°C0.986
12.226V5.019V3.312V5.023V285.79644.74°C115.10V
522.440A4.976A4.979A1.791A324.74790.839%1443 RPM36.8 dB(A)39.55°C0.990
12.223V5.021V3.313V5.015V357.49645.77°C115.10V
627.006A5.973A5.975A1.996A389.78490.540%1496 RPM37.8 dB(A)40.85°C0.992
12.219V5.023V3.314V5.007V430.51247.43°C115.10V
731.567A6.969A6.968A2.199A454.70289.917%1527 RPM37.0 dB(A)41.60°C0.994
12.215V5.025V3.315V4.999V505.69348.72°C115.10V
836.135A7.955A7.959A2.401A519.64989.211%1585 RPM38.1 dB(A)42.76°C0.995
12.212V5.027V3.316V4.992V582.49750.36°C115.10V
941.133A8.461A8.472A2.403A584.75388.580%1641 RPM39.0 dB(A)43.91°C0.995
12.208V5.026V3.315V4.990V660.14151.85°C115.09V
1045.885A8.956A8.957A3.015A649.63187.793%1716 RPM39.8 dB(A)45.34°C0.995
12.203V5.026V3.315V4.972V739.95453.87°C115.09V
1151.221A8.960A8.963A3.016A714.55287.002%1728 RPM39.9 dB(A)46.49°C0.996
12.199V5.025V3.313V4.970V821.30955.68°C115.09V
CL10.098A13.018A13.003A0.005A110.61583.854%1605 RPM38.4 dB(A)42.72°C0.960
12.220V5.061V3.346V5.067V131.91447.95°C115.10V
CL254.120A1.002A1.003A1.002A674.04288.307%1496 RPM37.8 dB(A)43.25°C0.995
12.208V4.995V3.291V5.028V763.29649.65°C115.09V

Load regulation is extra tight on all rails, showing this platform's capabilities. Still, several of Seasonic's Prime and Focus platforms achieve even better performance in this section.

The 650 G3 doesn't have a problem operating under very high ambient temperatures. However, its small-diameter fan will make its presence known. At increased temperatures, the fan profile goes wild. This can be a problem for some folks. The compact enclosure and small PCB need good airflow in order to last through EVGA's seven-year warranty.

When it comes to efficiency, the SuperNOVA 650 G3 scores well. It easily satisfies the 80 PLUS Gold requirements, even under our highly stressful testing conditions. Of course, this is an inherently efficient platform that was dropped to Gold levels in order cut its production costs and give enthusiasts a less expensive option.


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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.