The SuperNOVA 1000 G6 is an impressive unit by EVGA, which doesn't just take the Seasonic Focus platform and rebadge it, but actually makes some noticeable upgrades to improve performance and bring it up to today's standards. The newly released Corsair RM1000x is a tough opponent, but the 1000 G6 manages to take a slight lead in overall performance while keeping average noise output about one decibel lower. When it comes to efficiency, the G6 unit performs very well at light loads, but the average efficiency doesn't reach the levels of the previous G3 platform, which Super Flower provided. Another important region where the G6 model cannot take the lead from the competition is transient response. Not that it doesn't have a satisfactory transient response, but the competition performs better in this regard.
It is nice to see EVGA back on track in the PSU market. After Super Flower and FSP, it's Seasonic's turn to provide a platform, and the result is very good. The SuperNOVA (what a name for a PSU!) 1000 G6 is among the best products money can buy in this market segment, and its main competitor is the Corsair RM1000x which offers similar performance levels and has about the same average noise output, so it is up to you which one you prefer. A notable difference between these PSUs is that the G6 has two more PCIe connectors, while the Corsair unit is among the few that come with three EPS connectors.
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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, Future PLC, are financially involved with Cybenetics. Aris does not perform the actual certifications for Cybenetics.