EVGA SuperNOVA 750 P2 PSU Review

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A Look Inside And Component Analysis

Parts Description

Before proceeding with this page, we strongly encourage you to 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. Our main tools for disassembling PSUs are a Thermaltronics soldering and rework station and a Hakko FR-300 desoldering gun.

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Primary Side
Transient Filter4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush ProtectionNTC Thermistor & Relay
Bridge Rectifier(s)1x
APFC MOSFETs2x Infineon IPI50R199CP (550V, 11A @ 100 °C, 0.199Ω)
APFC Boost Diode1x CREE C3D08065A (650V, 8A @ 152 °C)
Hold-up Cap(s)1x Nippon Chemi-Con (400V, 680uF, 2000h @ 105 °C, KMR)
Main Switchers2x Infineon IPI50R140CP (550V, 15A @ 100 °C, 0.14Ω)
APFC ControllerInfineon NCP1653A
Switching ControllerAA9013
TopologyPrimary side: Half-Bridge & LLC Resonant Converter Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs6x Infineon IPP041N04N G (40V, 80A @ 100 °C, 4.1mΩ)
5V & 3.3VDC-DC Converters: 8x Infineon IPD060N03L G PWM Controller: 2x NCP1587A
Filtering CapacitorsElectrolytics: Nippon Chemi-Con (105 °C, KY, KZE, KRG) Polymers: Nippon Chemi-Con
Supervisor ICAA9013 & LM324ADG
Fan ModelGlobe Fan RL4Z B1402512HH (140mm, 12V, 0.5A, 1800 RPM, 135.74 CFM, 36.7 dB[A], DBB)
5VSB Circuit
Rectifier1x Mospec S10C60C SBR
Standby PWM Controller29604

This is the same platform we saw in the 850 P2 and 650 P2. It's made by Super Flower and based on that company's modern Leadex Platinum family design. A half-bridge topology is used on the primary side, along with an LLC resonant converter. On the secondary side we find a synchronous design with six FETs regulating the +12V rail and a couple of DC-DC converters generating the minor ones. Contrary to other high-end implementations, where the +12V FETs are installed on the main PCB's solder side, this unit's FETs are bolted on two small heat sinks. This means the chassis doesn't play an important role in cooling. All filtering caps are provided by a Japanese manufacturer (Chemi-Con), while the cooling fan uses double ball-bearings. Although FDB fans are considered to be higher-quality, a good DBB fan will still last a long time, especially when it's backed by a semi-passive mode.

As we've come to expect from Super Flower-made PSUs, the AC receptacle doesn't host any EMI filtering components. They're all installed on the main PCB, and include four Y caps, a pair of X caps, a couple of CM chokes and an MOV.

An NTC thermistor provides protection against large inrush currents. A bypass relay allows it to cool down quickly.

The single bridge rectifier is bolted on the primary heat sink. Its markings are hidden from view, so we weren't able to identify it. It is hard to desolder large heat sinks and we usually avoid messing with them. However, with our new desoldering gun, a Hakko FR-300, this process will be less painful.

Two Infineon IPI50R199CP are used in the APFC converter, and the boost diode is a CREE C3D08065A. The single bulk cap is provided by Chemi-Con (400V, 680uF, 2000h @ 105 °C, KMR). Its capacity is high enough to offer more than 17ms of hold-up time. But its voltage rating should be a little higher (at least 420V), since 400V is close to the APFC's DC bus voltage (around 380VDC).

The vertical PCB shown above hosts the APFC controller, an NCP1653A IC provided by On Semiconductor.

Two small heat sinks hold the primary switchers, two Infineon IPI50R140CP FETs, arranged into a half-bridge topology. An LLC resonant converter provides a significant efficiency boost, especially at higher loads, and the main controller is a proprietary Super Flower IC with model number AA9013. Most likely the same IC also handles the PSU's protection features. There's also a LM324ADG quad op-amp on the same PCB hosting the AA9013.

A synchronous design is used on the secondary side. Two small heat sinks hold six Infineon IPP041N04N G FETs responsible for generating the +12V rail. EVGA's 850 P2 uses six Infineon IPP023N04N G FETs for the same purpose, which have a much lower Rds(on) value (2.3mΩ instead of 4.1mΩ).

All filtering caps, both polymer and electrolytic, are provided by Chemi-Con. The electrolytic caps are rated at 105 °C and the large ones belong to the KZE family, while the smaller ones are from the KY line.

Two DC-DC converters generate the minor rails. Each one uses four Infineon IPD060N03L G FETs, along with a NCP1587A PWM controller. Metal shields above the FETs provide EMI protection.

An LM324ADG op-amp is used by the fan controller's circuit. As usual, we applied a lot of glue to the fan controller's PCB base in order to safely detach the fan and ECO switch headers. Without glue, you can easily break the base's soldering joints while trying to detach the headers mentioned above.

Next to the fan control PCB is a Mospec S10C60C SBR, which regulates the 5VSB rail.

The standby PWM controller is a small IC with a "29604" marking. There is no info available on this IC, unfortunately.

Lots of Chemi-Con polymer and electrolytic caps provide some extra ripple filtering on the modular PCB. The electrolytic caps belong to Chemi-Con's KRG line, which has a limited 1000-hour lifespan at 105 °C. This is a low-stress area, so caps with shorter lifetimes shouldn't cause any problems. But we'd still like to see higher-quality caps in this area.

Soldering quality is good, though not quite up to the level of other Super Flower-made units we've reviewed. In addition to its own factory, Super Flower contracts out with third-party manufacturing lines. Unfortunately, we cannot identify the factory that produced this PSU. Some component leads are longer than we'd like, though not so long they'll create issues.

The fan is made by Globe Fan and its model number is RL4Z B1402512HH (140mm, 12V, 0.5A, 1800 RPM, 135.74 CFM, 36.7 dB[A]). This is a quality double ball-bearing fan that typically spins slowly due to its relaxed profile. If you enable the semi-passive mode, you have to apply fairly high loads to engage the fan. The fan's minimum speed is fast enough to register 36 dB(A) on our measurement equipment, and unfortunately only three steps are exposed along the curve. In our opinion, EVGA (or Super Flower) should provide a more sophisticated fan control circuit and use a fan with a lower start-up voltage.

Contributing Editor

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

  • Nuckles_56
    Thanks for the review Aris. I'd have to say that I'm very impressed with the performance of this unit, it is excellent. It is also nice to see that it has no issues with holdup times either.
  • theyeti87
    It was the P2 650 review on Tom's that helped me decide on buying that unit. Same as this, just 100 watts less powerful. Extremely happy with the stability and quiet operation. Very reliable units!
  • dstarr3
    Any Super Flower review should just read "It's Super Flower. Just buy it."
  • detroitwillfall
    i have this psu and i am happy with it!
  • AfiliaSaga
    I have their G2 750W superflower unit, fantastic performance couldn't be happier with it.
  • David_24
    never knew the 650 was quietter. I got this product 3 months ago cause it's quiet.
  • refillable
    Another great product from EVGA. I regret belittling EVGA with their early PSUs. I also mistakenly said, "I don't like that EVGA PSU"...

    With SuperFlower, they're known to bring greatness now. Anyone looking for "Good PSUs" should go straight to these units and buy them. Exceptional value with excellent performance. Sadly, they're still not available in my country.
  • dstarr3
    18119171 said:
    Another great product from EVGA. I regret belittling EVGA with their early PSUs. I also mistakenly said, "I don't like that EVGA PSU"...

    With SuperFlower, they're known to bring greatness now. Anyone looking for "Good PSUs" should go straight to these units and buy them. Exceptional value with excellent performance. Sadly, they're still not available in my country.

    Right on. Unless you need significantly more or significantly less power, there's no reason to buy anything else.
  • jazzy663
    I like how EVGA has been stepping up their PSU game lately.