EVGA SuperNOVA 650 G1+ PSU Review: Efficient & Silent

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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.

Hold-Up Time

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

The hold-up time we measured was very long. However, the power-good signal was inaccurate and looked strange in our oscilloscope pictures. There's normally a clean drop in the signal, but that wasn't the case for EVGA's SuperNOVA 650 G1+.

Inrush Current

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

Inrush current is low with both voltage inputs.

Load Regulation And Efficiency Measurements

The first set of tests reveals the stability of the voltage rails and the 650 G1+’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.

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Test #12V5V3.3V5VSBDC/AC (Watts)EfficiencyFan SpeedPSU NoiseTemps (In/Out)PF/AC Volts
13.576A2.015A1.984A1.013A64.80286.442%795 RPM18.3 dB(A)38.76°C0.886
28.145A3.023A2.977A1.216A129.27390.043%790 RPM18.3 dB(A)39.13°C0.938
313.115A3.531A3.462A1.421A194.35791.281%790 RPM18.3 dB(A)39.64°C0.955
418.091A4.037A3.979A1.625A259.57491.559%795 RPM18.3 dB(A)40.26°C0.961
522.735A5.048A4.980A1.830A324.86691.346%790 RPM18.3 dB(A)40.89°C0.965
627.323A6.061A5.980A2.034A389.39590.902%795 RPM18.3 dB(A)41.85°C0.968
731.976A7.074A6.983A2.238A454.70490.282%925 RPM22.3 dB(A)42.84°C0.969
836.636A8.085A7.988A2.442A520.00189.492%1260 RPM32.1 dB(A)44.15°C0.971
941.698A8.596A8.479A2.441A584.91888.629%1500 RPM36.9 dB(A)45.21°C0.971
1046.500A9.108A9.003A3.066A649.74287.574%1735 RPM42.1 dB(A)45.92°C0.972
1151.902A9.111A9.010A3.067A714.56686.542%1915 RPM42.2 dB(A)46.76°C0.972
CL10.132A14.002A13.999A0.000A117.25581.801%1125 RPM29.0 dB(A)43.43°C0.937
CL254.003A1.002A0.998A1.000A663.53387.681%1780 RPM40.5 dB(A)44.53°C0.972

Load regulation was fairly tight on every rail, and the 650 G1+ easily met the 80 PLUS Gold standard's requirements, even under increased operating temperatures.

Its fan profile was relaxed up through 90% of the PSU's maximum rated load. Only during the full load and overload tests did noise exceed 40 dB(A).

These tests also exposed a significant platform weakness: low PF readings that, even under full load, do not exceed 0.98. Most PSUs achieve >0.99 under the same conditions. Obviously, this PSU's APFC circuit needs tuning in order to perform optimally.

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Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.

    i read all your guys articles weather im in the market for new or not and i read that article and almost right off the top the article was killed with oh you can get the g3 for same price hah anyways guess if you hadnt someone woulda been quick to mention
  • dunn.md
    Your review is based on the $110 MSRP. This PSU is currently selling for $69.99 on Amazon. Would you highly recommend this PSU at this significantly lower price point?
  • DSzymborski
    The EVGA G3 650W can be bought for $69.99 also and it's much preferable.

    Like about 2/3 of the 850 or so individual PSUs EVGA is selling, I can't figure out exactly who the target market is for this.
    Calling this G1 "SUPERNOVA" is a bit on the nose.
    These are manufactured by FSP.

    EVGA's excellent G2 and G3 SUPERNOVA's are manufactured by SUPERFLOWER....
  • Melon_seed
    Thank you for the review. I shall drop this off my list. Now its either Superflower leadex II or if I am lucky, Seasonic focus plus.