Tom's Hardware Verdict
The EVGA SuperNOVA 850 G7 from offering top-performance. FSP, the OEM behind the G7 line, made an excellent platform with a high power density.
Full power at 47 degrees Celsius
Top overall performance
Good build quality
Efficient enough 5VSB rail
Tight load regulation
Good transient response
Good ripple suppression
Loads of connectors
Compatible with the alternative sleep mode
PSU load indicators
No PCIe 5.0 connectors
Highly set OCP at 12V and OPP
High inrush currents
Power factor could be higher with 230V input
Small distance between the peripheral connectors
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It's time for a new leadership power supply: The EVGA SuperNOVA 850 G7 outperforms the mighty Corsair RM850x (2021), earning a place in our list of the best PSUs. It might not have a 12+4 pin PCIe connector yet, but it offers top performance and super-compact dimensions. The 850W G7 and G6 units have the same price tags. You should go with the first if you are interested in pure performance or choose the second if you care more about noise output.
FSP is providing the platforms. The G2 and G3 lines were by Super Flower, G5 by FSP and G6 used the Seasonic Focus platform. The power density scores go through the roof with only 130 mm in length for all G7 units. So far, we haven't encountered such small ATX form-factor PSUs, especially in 1,000 W and 850 W capacities. There is no room to go any smaller than that, without sacrificing the 120 mm fan for a smaller one, which would lead to increased noise. If you need smaller PSUs, you should look at the SFX-L and SFX form factors.
The exterior design looks nice with a light blue fan grille, fully modular cable design and compact dimensions.
On one of the PSU's sides you will find five LED indicators, which depict the load level.
|Max. DC Output||850W|
|Efficiency||80 PLUS Gold, Cybenetics Platinum (89-91%)|
|Noise||Cybenetics Standard++ (30-35 dB[A])|
|Intel C6/C7 Power State Support||✓|
|Operating Temperature (Continuous Full Load)||0 - 50°C|
|Over Voltage Protection||✓|
|Under Voltage Protection||✓|
|Over Power Protection||✓|
|Over Current (+12V) Protection||✓|
|Over Temperature Protection||✓|
|Short Circuit Protection||✓|
|Inrush Current Protection||✓|
|Fan Failure Protection||✗|
|No Load Operation||✓|
|Cooling||120mm Fluid Dynamic Bearing Fan (MGA12012XF-O25)|
|Dimensions (W x H x D)||150 x 85 x 130mm|
|Weight||1.72 kg (3.79 lb)|
|Form Factor||ATX12V v2.52, EPS 2.92|
|Rail||Row 0 - Cell 1||3.3V||5V||12V||5VSB||-12V|
|Row 2 - Cell 0||Watts||Row 2 - Cell 2||120||850||15||6|
|Total Max. Power (W)||Row 3 - Cell 1||Row 3 - Cell 2||850||Row 3 - Cell 4||Row 3 - Cell 5||Row 3 - Cell 6|
Cables and Connectors
|Description||Cable Count||Connector Count (Total)||Gauge||In Cable Capacitors|
|ATX connector 20+4 pin (600mm)||1||1||18-22AWG||Yes|
|4+4 pin EPS12V (700mm)||2||2||18AWG||No|
|6+2 pin PCIe (700mm+150mm)||2||4||18AWG||No|
|6+2 pin PCIe (700mm)||2||2||18AWG||No|
|4-pin Molex (550mm+100mm+100mm+100mm)||1||4||18AWG||No|
|FDD Adapter (100mm)||1||1||22AWG||No|
|AC Power Cord (1390mm) - C13 coupler||1||1||16AWG||-|
All the cables are long, and the amount of connectors is sufficient. With two EPS and six PCIe connectors, the PSU won't have any problems delivering its full power. There are also plenty of peripheral connectors, but the distance between them is short.
FSP used in-cable caps in the ATX cable for better ripple suppression, so don't expect this cable to be highly flexible.
We strongly encourage you to have a look at 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.
|PCB Type||Double Sided|
|Transient Filter||4x Y caps, 2x X caps, 2x CM chokes, 1x MOV|
|Inrush Protection||NTC Thermistor SCK-056 (5 Ohm) & Relay|
|APFC Boost Diode||1x|
1x Nippon Chemi-Con (420V, 470uF, 2,000h @ 105°C, KHE) &|
1x TK (420V, 330uF, 2,000h @ 105°C, LGW)
|Main Switchers||2x Infineon IPP60R120P7 (600V, 16A @ 100°C, Rds(on): 0.12Ohm)|
1x Novosense NSi6602
|APFC Controller||Infineon ICE2PCS02|
|Resonant Controller||Champion CM6901T2X|
Primary side: APFC, Half-Bridge & LLC converter|
Secondary side: Synchronous Rectification & DC-DC converters
|+12V MOSFETs||no info|
|5V & 3.3V||DC-DC Converters: 6x Infineon BSC0901NS (30V, 94A @ 100°C, Rds(on): 1.9mOhm)|
PWM Controller(s): ANPEC APW7159C
Electrolytic: 5x Rubycon (3-6,000h @ 105°C, YXG)
|Supervisor IC||Weltrend WT7527RA (OCP, OVP, UVP, SCP, PG)|
|Fan Controller||Microchip PICF15324|
|Fan Model||Protechnic Electric MGA12012XF-O25 (120mm, 12V, 0.52A, Fluid Dynamic Bearing Fan)|
|Rectifier||1x NIKO-SEM P1006BD (60V, 42A @ 100°C, Rds(on): 10mOhm) FET|
|Standby PWM Controller||Power Integrations INN2603K|
The OEM behind this platform is FSP, and it looks nice! The only problem is that because of the overpopulated, tiny PCB, we had a tough time identifying all parts without heavy de-soldering, which could destroy the PSU, and we need it for future reference in case we have to re-test it. FSP used good parts, and the design is up to date, with a half-bridge topology and an LLC resonant converter on the primary side. The secondary side hosts a synchronous rectification scheme for the 12V rail and DC-DC converters for the minor rails.
The EMI filter is complete so that EMI emissions won't be an issue, both incoming and outgoing. We also found an MOV for handling voltage surges and an NTC thermistor and bypass relay combo, for protection against high inrush currents.
The pair of bridge rectifiers is sandwiched between two heat sinks.
The APFC converter uses three FETs and a single boost diode. The PFC controller is installed on a vertical board, an Infineon ICE2PCS02. The same board also hosts an operational amplifier (op-amp). The bulk caps are a weird mix of Chemi-Con and TK. Usually, identical bulk caps are used, but in this case, we find two different. A good reason for this can be the shortage of caps.
Two Infineon IPP60R120P7 are the main FETs, configured in a half-bridge topology. Their driver IC is a Novosense NSi6602, and the LLC resonant converter is a Champion CM6901T2X IC. Precisely the same parts are used in the 1000 G7 unit.
The FETs that regulate the 12V rail are installed on a board next to the main transformer to minimize energy losses. The DC-DC converters are installed on another vertical board.
The mix of Rubycon electrolytic and Chemi-Con and NIC polymer caps, is the best we could ask for this PSU.
The standby PWM controller is by Power Integrations, and a NIKO-SEM P1006BD FET is the rectifier on the secondary side of the 5VSB circuit. The same 5VSB circuit is used on the 1000 G7 model.
Many Chemi-Con polymer caps are installed on the modular PCB for ripple filtering purposes.
The main supervisor IC is a Weltrend WT7527RA.