EVGA SuperNOVA 750 GA Power Supply Review

The EVGA SuperNOVA 750 GA is offered at a good price, given its build quality and performance. Moreover, it won't have any problems with power spikes because of the sky-high set protection features.

Full power at 47 degrees Celsius

Good build quality

Efficient

Efficient 5VSB rail

Satisfactory load regulation

Good enough ripple suppression

Low inrush current with 115V

Fully modular

Compatible with the alternative sleep mode

Compact dimensions

DBB fan

10-year warranty

Protection features are not correctly set

Low hold-up time

High inrush current with 230V

Low PF readings

Higher than 0.1W vampire power with 230V input

In-cable caps

Short distance between the peripheral connectors

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The EVGA SuperNOVA 750 GA doesn't outperform the majority of competing offerings in the 750W category, including those among the best PSUs. Nonetheless, at $80, it is a good bargain, given its high build quality and decent overall performance. Moreover, the ten-year warranty shows EVGA's faith in its reliability.

There are multiple SuperNOVA power supply lineups from EVGA. The GA one range consists of four members with capacities ranging from 550W to 850W. We saw this one had positive reviews on Amazon and other resellers, so we chose to get and test one.

The 750W member of the SuperNOVA GA line will be our test subject. This unit has Gold efficiency in the 80 Plus standard and Silver in the Cybenetics scale. It also has a Cybenetics Standard++ noise rating, meaning that you won't need earplugs to use it. Besides the fully modular cable design and compact dimensions, the double ball-bearing fan is another interesting feature. DBB fans, in general, are preferred to FDB ones under harsh conditions because they are more tolerant to increased operating temperatures.

The OEM behind the SuperNOVA 750 GA is Andyson, a manufacturer we don't often see. This is a shame because we have seen some terrific platforms from this OEM in the past, including the Aerocool Project 7 PSUs.

135mm Double Ball Bearing Fan (RL4Z B1352512EH)

There are two EPS connectors on dedicated cables and six PCIe on four cables. The number of peripheral cables is adequate, but the distance between the peripheral connectors is short, at just 100 mm. Lastly, the in-cable caps in the ATX, EPS, and PCIe cables might cause trouble during cable management.

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.

Electrolytic: 2x Nichicon (2-5,000h @ 105°C, HD), 4x Rubycon (4-10,000h @ 105°C, YXJ), 4x Rubycon (6-10,000h @ 105°C, ZLH), 1x Nichicon (4-10,000h @ 105°C, HE), 1x Nichicon (5-6,000h @ 105°C, HV) Polymer: 16x FPCAP

The platform is by Andyson. The PCB is small and overpopulated. The heat sinks are large enough and the build quality is high. Finding good Japanese caps in an 80-dollar PSU and a double ball-bearing fan is a pleasant surprise.

The transient filter has all necessary parts, including an MOV and an NTC thermistor. The latter is supported by a relay, which bypasses it once the PSU starts, to allow for higher efficiency and increased protection from inrush currents since the NTC cools down, increasing its resistance.

The pair of bridge rectifiers are sandwiched between two heat sinks.

The APFC converter uses two Infineon FETs and a single CREE boost diode. The APFC controller is a Champion CM6500UNX IC. The bulk cap is by Nichicon and is of good quality, but its capacity is not high enough to allow for a longer than 17ms hold-up time.

The main FETs are four MagnaChip MDF18N50, installed in a full-bridge topology. These FETs are not as good in terms of quality as the FETs used in the APFC converters, but thanks to the full-bridge topology, the stress applied to them is lower. An LLC resonant is also used to provide a notable efficiency boost. The resonant controller is a Champion CM6901T6X.

Four Infineon FETs regulate the 12V rail. Two DC-DC converters regulate the minor rails. They use in total six FETs, and the common PWM controller is by Anpec.

Japanese manufacturers provide the filtering caps. Besides electrolytic caps, a large number of polymer ones are also used.

The standby PWM controller is an ATK AT6002H. On the primary side, the 5VSB rail uses a FET, and on the secondary side, we find an SBR.

Several electrolytic and polymer caps are installed on the face of the modular PCB.

The main supervisor IC is an IN1S429I-DCG.

The -12V rail uses an STMicroelectronis L7912CV. It is nice to see a regulating IC for this rail since it provides enhanced protection.

Soldering quality is good.

The cooling fan uses double ball-bearings and it is of high quality.

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Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.

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