EVGA SuperNOVA 1000 G6 Power Supply Review: EVGA Meets Seasonic

EVGA has done it again, this time with Seasonic's help. The SuperNOVA 1000 G6 is one of the best of the Gold 1000W category, posing some serious competition to the Corsair RM1000x (2021). Noise output is kept low, although it's only 1 dBA less than Corsair's top RMx unit, so the difference is barely noticeable. Overall, though, the new EVGA 1000 G6 boasts impressive performance, which justifies a place in our best PSUs article. 

Let's start with some history. After the highly successful SuperNOVA G2 line, which Super Flower produced, EVGA rolled out the G3 (Super Flower) and G5 (FSP) until it reached the G6 line, which is based on a Seasonic design. A major feature of the 1000 G6 is the hybrid (Hardware & Firmware) over power protection (OPP). An analog IC handles hardware OPP, and an MCU is responsible for the firmware OPP. The first is designed to trip when power output exceeds 135% for a few nanoseconds, while the latter trips once power exceeds 125% for longer periods, in the millisecond range. 

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Product Photos

Compared to 1000 G3, the similar capacity G6 model is smaller thanks to its 140mm depth. The 135mm fan barely fits in its chassis. Like we said earlier, EVGA uses an upgraded Seasonic Focus platform for its G6 models, so we expect high performance and increased reliability even with the small size. The PSU features semi-passive operation (ECO mode), which you can deactivate if you want the fan to operate constantly. Lastly, all cables are modular, and the provided warranty is long, at ten years. 

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Product Photos

Specifications

Power Specifications

Cables & Connectors

This PSU comes with plenty of cables and connectors, including two EPS, eight PCIe, which are overkill even for a 1000W PSU, 12 SATA, and four 4-pin Molex. There is even a floppy adapter for those of you who still need a berg connector. 

All cables are long, and there are no in-cable caps. Finally, all the cables are flat except for the 24-pin ATX cable, which is fully sleeved. 

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Cable Photos

Component Analysis

Is this your first time buying a power supply? Before reading on, we strongly encourage you to look through our PSUs 101 article, which provides valuable information about PSUs and their operation, allowing you to better understand the components we're about to discuss.

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Overall Photos

The G6 line uses an updated Seasonic Focus platform featuring an MCU which, besides the firmware OPP, as EVGA calls it, also handles over-temperature protection and controls the fan's speed. We noticed a single wire used for an NTC thermistor which provides information on the MCU hosted on the same daughter-board with the DC-DC converters. Ideally, this connection should be made through another, less visible way, but this would require a major platform re-design which costs money (and time). 

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Transient filter

The transient filter is complete and does a good job. Moreover, an MOV provides protection against voltage surges, and the large inrush currents are suppressed by an NTC thermistor, with a bypass relay supporting it. 

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Bridge rectifiers

The bridge rectifiers are powerful; combined, they can handle up to 50A of current.

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APFC converter

The APFC converter uses two Infineon FETs and a single boost diode. The bulk caps are by Chemi-Con, and their combined capacity reaches 940uF. Finally, the APFC controller is the Champion CM6500UN, which offers higher performance (higher PF readings at light and moderate loads) than the CM6502, and it is pin to pin compatible with the latter. 

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Main FETs and primary transformer

The main FETs are arranged into a full-bridge topology, and an LLC resonant converter is also used to boost efficiency. The resonant controller is the Champion CU6901V, which supports burst operation for higher efficiency at light loads. 

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12V FETs and VRMs

The 12V FETs contact the PSU's chassis through the thermal paste and white material that looks like paper (but it isn't). We removed a piece of it to have a clean look at two of the FETs. 

The VRMs handling the minor rails use six FETs, and the common PWM controller is by ANPEC. 

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Filtering caps

All filtering caps are provided by Japanese manufacturers and are of good quality to outlast the long warranty. Besides electrolytic caps, many polymer caps are also used. 

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5VSB Circuit

The 5VSB rail uses an SBR on its secondary side, so we don't expect high-efficiency levels. 

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Supervisor ICs

The main supervisor IC is a Weltrend WT7527RA, supported by a WT51F104 micro-controller. 

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Modular board front

Besides bus bars, the modular board also hosts many polymer caps for cleaning the PSU's DC rails. 

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Soldering quality

Soldering quality is within expectations.

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Cooling fan

Hong Hua provides the cooling fan, which uses a fluid dynamic bearing for lower noise output and increased reliability. 

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