EVGA SuperNOVA 750 G5 Power Supply Review

The SuperNOVA 750 G5 achieves a fairly high overall performance score, which is however lower than its main competitors, the Corsair RM750x and the Seasonic Focus Plus Gold 750W. Unfortunately, FSP, the manufacturer of the new EVGA G5 line, did not pay much attention to the fan speed profile, so the 750 G5 is noisy. In addition, its vampire power exceeds 0.25 W with a 230 V input, so it does not meet even the lowest Cybenetics efficiency standard (ETA-S).

EVGA’s numbered G, P and T lines (G2, G3, P2 and T2) used exclusively the Super Flower Leadex platforms, which are among the best in today’s market. However, recent US tariffs. UU. They affected manufacturers with production lines in China, so EVGA had to turn to another OEM for the new G5 line, which will replace the G3 models. This is probably the best time to obtain a G3 power supply, even a G2 if you can find it before they disappear from the stores

The G5 line is based on an FSP platform, which uses an Active Clamp Reset Forward topology. Briefly, this is a budget platform capable of offering long waiting times even with small bulk caps and high levels of efficiency. Still, its performance cannot see half-bridge and full-bridge half-eye topologies equipped with LLC resonant converters.


Manufacturer (OEM) FSP
Max. DC output 750W
Efficiency 80 PLUS Gold *
Noise LAMBDA-S + (35-40 dB [A]) *
Modular [19659020] ✓ (Fully)
Intel C6 / C7 Power State Support
Operating temperature (continuous full load) 0 – 50 ° C
Surge protection ✓ [19659031] Under Voltage Protection
Overvoltage Protection
Overcurrent Protection (+ 12V)
Over Temperature Protection
Short Circuit Protection [19659020] ✓
Surge protection
Protection against input current
Fan failure protection
Operation without load
Cooling 135mm fluid dynamic bearing Ve ntilator (MGA13512HF-A25)
Semi-passive operation ✓ (Selectable)
Dimensions ( W x H x D ) 150 x 85 x 150 mm
Weight [19659021] 1.63 kg (3.59 lb )
Form factor ATX12V v2.4, EPS 2.92
Warranty 10 years

* Not yet certified by Cybenetics. According to our measurements, the power supply falls into this category of noise. There is no efficiency classification (ETA), due to the high vampire power that takes it away from Cybenetics lists.

Power specifications

Rail 3.3V 5V 12V 5VSB -12V
Max. Power Amps 24 24 62.5 3 0.5
Watts 120 750 15 [19659077] 6 [19659088] Total Max. Power (W) 750

Cables and connectors

Modular cables
Description Cable count Connector count (total) Indicator [19659078] On cable capacitors
ATX connector 20 + 4 pins (600 mm) 1 1 18-22AWG No
4 + 4 pins EPS12V (700 mm) 2 2 18AWG No
6 + 2 PCIe pins (700 mm) 2 2 18AWG No [19659021] 6+ 2-pin PCIe (700 mm + 150 mm) 2 4 18AWG No
SATA (550mm + 100mm + 100mm) 3 9 [19659077] 18AWG No
4-pin Molex (550 mm + 100 mm + 100 mm + 100 mm) 1 4 18AWG No
FDD adapter (100 mm) 1 1 [19659079] 22AWG No
AC power cord (1420 m m) – Coupler C13 1 1 18AWG

Many cables and connectors are provided with wi The 750 G3. It would be nice if the EPS and PCIe connectors used thicker gauges of 16 AWG, but this is not a super strong power supply, so we’ll let this go. However, what we cannot let go is the small distance between the peripheral connectors. With only 100 mm, you will probably have compatibility problems with larger chassis. That is why we recommend a space of at least 150 mm between the SATA and the 4-pin Molex connectors. Finally, the absence of caps on the cable is good news, since it creates a routing of cables and administration processes without problems.

Component Analysis

We recommend that you take a look at our PSU 101 article, which provides valuable information about PSUs and their operation, that allows you to better understand the components we are about to discuss

General data
Manufacturer (OEM) FSP
PCB type [19659143] Double-sided
Primary side
Transient filter 4x Y bushings, 2x X bushings, 3x coils CM, 1x MOV
Protection against breakthrough Thermistor and relay NTC
Bridge rectifier (s) 1x HY GBJ2506P (600V, 25A @ 100 ° C)
MOSFETS APFC 2x ROHM R6020KNX (600V, 20A, 0.196Ohm)
APFC Booster Diode 1x ROHM SCS306AM (650 6A at 120 ° C)
Retention Cap (s) 1x Rubycon (450V, 390uF, 3,000h @ 105 ° C, MXG)
Main switches 1x Infineon IPA80R 310CE (800V, 10.6A @ 100 ° C, 0.31Ohm)
Reset switch 1x Infineon IPD80R1K4CE (800V, 2.3 At @ 100 ° C, 1.4Ohm)
APFC / Switching controller FSP 6600 IC
Topology Primary side: Forward active clamp restart
Secondary side: Synchronous rectification and DC-DC converters
Secondary side
+ 12V MOSFETS 4x Infineon IPP029N06N (60V, 100A @ 100 ° C, 2.9mOhm)
DC-DC 5V converters and 3.3V : 4x Infineon BSC042N03LS (30V, 59A @ 100 ° C, 4.2mOhm)
PWM controllers: ANPEC APW7159C
Filtration capacitors Electrolytic: 2x Nippon Chemi-Con (1-5,000 @ 105 ° C, KZE), 2x Rubycon (3-6,000 @ 105 ° C, YXG), 1x Rubycon (4-10,000 @ 105 ° C, YXF)
Polymers: 15x United Chemi-Con
IC Supervisor [19659139] Weltrend WT7527 (OCP, OVP, UVP, SCP, PG)
Fan model Protechnic Electric MGA13512HF-A25 (135 mm, 12V, 0.28A, Fluid dynamic bearing fan)
Circuit 5VSB [19659138] Rectifi er 1x CET CEF02N7G FET (700V, 1.3A @ 100 ° C, 6.75Ohm)
PWM controller on hold FSP 6601 IC

On the primary side, an ACRF topology (Active Clamp Reset Forward) is used with a single FET as the main switch, while another FET plays the role of the reset switch. On the secondary side, the +12 V rail uses a synchronous rectification scheme, and the smaller rails are generated through a pair of DC-DC converters. All heat sinks are small, and there is a strange bridge that connects the APFC and primary heat sinks, which is primarily for aesthetics rather than doing something important (for example, balancing the operating temperatures of those heat sinks). hot). Finally, the overall design is clear, so the air flow increases and, on the secondary side, there are not many electrolytic caps; on the contrary, FSP used many polymer caps to filter the ripple.

The transient filter has all the necessary parts. There is also protection against the input current through an NTC thermistor, which is compatible with a bypass relay.

Only 390uF are sufficient for the massive cover of a power supply that uses an ACRF topology, to offer a much longer duration than that required (17 ms) according to the ATX specification, waiting time.

The photos above show the main switching and resetting FET of the ACRF topology.

+12 V FETs are installed in a small heat sink. In addition, both VRMs are located on a small vertical plate.

The main PCB houses a small amount of electrolytic caps, along with several polymer. Many polymer caps are on the modular PCB.

This is the board that houses the supervisory IC along with a series of operational amplifiers (operational amplifiers), shown in the photos above.

Welding quality is good and the same goes for construction quality.

The fan is of good quality, but its speed profile is aggressive.

Add a Comment

Your email address will not be published. Required fields are marked *