EVGA's SuperNOVA 650 G1+ is based on the same platform as be quiet!'s Pure Power 600W. The main difference between them is that the 650 G1+'s secondary side features better filtering capacitors. This FSP-manufactured platform is suitable for the mid-range space, but it's not equipped to take on higher-end models like EVGA's own 650 G3, Seasonic's Focus Plus Gold 650W, or the Corsair RM650x.
We expected the 650 G1+ to sell for $80 or so. That would have given it a notable advantage compared to the aforementioned models. Instead, EVGA prices it above the SSR-650FX and on par with the 650 G3. Although the 650 G1+ boasts high efficiency and an impressive hold-up time result, the PSU's transient response is downright bad, while its power-good signal is inaccurate.
Fully modular cabling, a high-quality fan that enables quiet operation, two EPS and four PCIe connectors, and admirable efficiency are among this PSU's strengths. And despite the poor transient response results we recorded, its overall performance score is high. EVGA has tight load regulation, very good ripple suppression at +12V, and a long hold-up time to thank. Still, it'd be difficult to recommend the SuperNOVA 650 G1+ with so many other compelling options available around the same price.
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Disclaimer: Aris Mpitziopoulos is Tom's Hardware's PSU reviewer. He is also the Chief Testing Engineer of Cybenetics, and developed the Cybenetics certification methodologies apart from his role on Tom's Hardware. Neither Tom's Hardware nor its parent company, Purch Media, are financially involved with Cybenetics. Aris does not perform the actual certifications for Cybenetics.