EVGA SuperNOVA 750 GA Power Supply Review
The EVGA SuperNOVA 750 GA doesn’t outperform most of the competition in the 750W category, including the best PSUs. Nevertheless, the $80 price tag is a bargain considering the quality build and decent overall performance. Plus, a 10-year warranty shows his EVGA confidence in its reliability.
EVGA has multiple SuperNOVA power supply lineups. The GA one series consists of four members with capacities ranging from 550W to 850W. This had positive reviews on Amazon and other resellers, so I decided to get it and test it.
The 750W member of the SuperNOVA GA line will be tested. This unit has Gold efficiency on the 80 Plus standard and Silver efficiency on the Cybernetics scale. And with Cybernetics Standard++ noise rating, you don’t need to use earplugs. Besides the fully modular cable design and compact dimensions, the double ball bearing fan is also an interesting feature. In general, DBB fans are more resistant to increased operating temperatures, so he is preferred over FDB fans in harsh conditions.
The OEM behind the SuperNOVA 750 GA is Andyson, a manufacturer you don’t see very often. This is a shame as we’ve seen some great platforms from this OEM in the past, such as the Aerocool Project 7 PSU.
specification
Manufacturer (OEM) | Andison |
maximum. DC output | 750W |
efficiency | 80 PLUS Gold, Cybernetics Silver (85-87%) |
noise | Cybernetics S++ (30-35 dB[A]) |
base unit | ✓ (sufficiently) |
Intel C6/C7 power state support | ✓ |
Operating temperature (continuous full load) | 0 to 50°C |
Overvoltage protection | ✓ |
low voltage protection | ✓ |
over power protection | ✓ |
Overcurrent (+12V) protection | ✓ |
Overheat protection | ✓ |
short circuit protection | ✓ |
surge protection | ✓ |
Inrush current protection | ✓ |
Fan failure protection | ✗ |
No-load operation | ✓ |
cooling |
135mm double ball bearing fan (RL4Z B1352512EH) |
Semi-passive operation | ✓ (selectable) |
Dimensions (width x height x depth) | 150×85×150mm |
weight | 1.54 kg (3.4 lbs) |
form factor | ATX12V v2.52, EPS 2.92 |
guarantee | Decade |
Power supply specifications
rail | 3.3V | 5V | 12V | 5VSB | -12V | |
maximum.Power | Amplifier | 20 | 20 | 62.5 | 3 | 0.3 |
Watt | 120 | 750 | 15 | 3.6 | ||
total max. Power (W) | 750 |
cables and connectors
explanation | number of cables | Number of connectors (total) | gauge | with cable capacitor |
---|---|---|---|---|
ATX connector 20+4 pin (590mm) | 1 | 1 | 16-18AWG | No |
4+4 pin EPS12V (700mm) | 2 | 2 | 18-22AWG | yes |
6+2 pin PCIe (700mm+150mm) | 2 | Four | 18-22AWG | yes |
6+2 pin PCIe (700mm) | 2 | 2 | 18-22AWG | yes |
SATA (560mm+105mm+105mm) | 3 | 9 | 18AWG | No |
4 pin Molex (550mm+100mm+100mm+100mm) | 1 | Four | 18AWG | No |
FDD adapter (100mm) | 1 | 1 | 22AWG | No |
AC power cord (1400mm) – C13 coupler | 1 | 1 | 18AWG | – |
The dedicated cable has 2 EPS connectors and the 4 cables have 6 PCIe connectors. The number of peripheral cables is sufficient, but the distance between peripheral connectors is short at only 100 mm. Finally, in-cable caps on ATX, EPS, and PCIe cables can cause problems during cable management.
Component analysis
I highly recommend taking a look at the PSU 101 article which provides valuable information on PSUs and their operation. You will be able to better understand the components that we are going to discuss.
general data | – |
Manufacturer (OEM) | Andison |
Substrate type | one side |
primary side | – |
transient filter | 4x Y Cap, 2x X Cap, 2x CM Choke, 1x MOV |
Inrush protection | NTC thermistor SCK205R0 (5 ohm) & relay |
bridge rectifier |
2 times |
APFC MOSFET |
2x Infineon IPP60R099P7 (600V, 20A @ 100°C, Rds(on): 0.099 ohms)
|
APFC boost diode | |
bulk cap |
1x Nichicon (400V, 560uF, 2,000 hours at 105°C, GG)
|
main switcher |
4x magna chips MDF18N50 (500V, 11A @ 100°C, Rds(on): 0.27 ohms)
|
APFC controller | |
resonant controller | champion CM6901T6X |
topology |
Primary Side: APFC, Full Bridge & LLC Converter |
Secondary side | – |
+12V MOSFETs | 4x Infineon IRFB7440PbF (40V, 122A @ 100°C, Rds(on): 2.5mOhm) |
5V & 3.3V | DC-DC converter: 6x Nexperia PSMN4R0-30YLD (30V, 67A @ 100°C, Rds(on): 4mΩ) PWM Controller: ANPEC APW7159C |
filtering capacitor |
Electrolysis: 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) |
Supervisor IC | IN1S429I-DCG |
fan model | Globe Fan RL4Z B1352512EH (135mm 12V 0.5A Double Ball Bearing Fan) |
5VSB circuit | – |
rectifier |
1x 100R25C SBR & 1x IPS ITU02N70A FET |
Standby PWM controller | Offensive power AT6002H |
-12V circuit | – |
rectifier |
1x ST Microelectronics L7912CV (-12V, 3mA)
|
Platform is Andison. PCBs are small and overcrowded. The heatsink is large enough and the build quality is high. Finding a good Japanese cap on his PSU for $80 and a double ball bearing fan is a pleasant surprise.
Transient filters include all necessary components such as MOVs and NTC thermistors. The latter is supported by a relay, which is bypassed when the PSU starts, cooling the NTC and increasing its resistance, resulting in better efficiency and better protection from inrush currents.
A pair of bridge rectifiers are sandwiched between two heatsinks.
The APFC converter uses two Infineon FETs and one CREE boost diode. APFC controllers are champions CM6500UNX I C. The bulk cap is made by Nichicon and is of good quality, but its volume is not sufficient to allow holdup times greater than 17ms.
Main FETs are 4 MagnaChips MDF18N50, installed in a full-bridge topology. These FETs are not as good in quality as the FETs used in APFC converters, but they are under less stress thanks to the full-bridge topology. LLC resonance is also used to achieve significant efficiency gains.The resonant controller is the champion CM6901T6X.
Four Infineon FETs regulate the 12V rail. Two DC-DC converters regulate the minor rails. A total of 6 FETs are used and the common PWM controller is from Anpec.
Japanese manufacturers offer filter caps. In addition to electrolytic caps, many polymer caps are used.
The standby PWM controller is ATK. AT6002HThe primary uses a FET on the 5VSB rail and the secondary uses an SBR.
A number of electrolytic and polymer caps are attached to the surface of the modular PCB.
The main supervisor IC is IN1S429I-DCG.
-12V rail uses STMicroelectronis L7912CVIt would be nice to have a regulation IC for this rail as it provides enhanced protection.
The soldering quality is good.
The cooling fan adopts double ball bearings and is of high quality.
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