External Appearance

Where other manufacturers expanded their designs beyond the SFX specification limits in order to fit the required components, Enermax followed the SFX specifications down to the letter. The chassis is measuring 125 × 63.5 × 100 mm / 4.92 × 2.5 × 3.94 in (W×H×D), which is the exact SFX form factor design size, ensuring that the Revolution SFX will fit inside every SFX-compliant case.

The chassis of the Revolution SFX is sprayed black, with the series logo appearing in white on every side of the PSU, even on the right side of the unit where the sticker with its electrical specifications and certifications is. Enermax’s designers clearly expected that the PSU will be installed with its fan facing upwards, otherwise the sticker will not be visible and the logos on the left side of the unit will be upside down. However, installing the Revolution SFX with the fan facing downwards will not have any repercussions other than aesthetic.

There is nothing on the rear side of the Revolution SFX other than the AC cable receptacle. In designs where every millimeter counts, even a simple on/off switch can be a luxury. The connectors for the modular cables can the seen at the front side of the unit, with a basic legend printed on the metallic chassis. The connectors should be fool proof but the 6-pin SATA/Peripheral cables can be forced into the 8-pin PCI-E/EPS connectors, in which case the inevitable result would be irreversible component damage. However, a lot of force is required, as the plastic lock of the cables will prevent their insertion in the 8-pin connectors.

 

Internal Design

A Yate Loon Electronics low profile 80 mm fan is responsible for the cooling of the Revolution SFX PSU. The thin fan has a sleeve bearing and a maximum rotational speed of 3000 RPM. It is strange why the company did not opt for a ball bearing engine fan instead on a unit with a 5-year long warranty. It is quite possible that the designer assumed that the fan will not be operational for more than a few hours every day, as the Revolution SFX has a semi-passive cooling design and the fan will start only after surpassing a certain load level.

A look at the interior of the Revolution SFX reveals a packed design, with barely enough space for the airflow to travel through the components. The OEM behind the Revolution SFX is Channel Well Technologies (CWT), a well-known designer and manufacturer of advanced PSU platforms.

The filtering stage is on a secondary PCB that is soldered on the AC receptacle. We measured four Y capacitors, two X capacitors and two filtering inductors in total, which are pretty much the standard configuration for an advanced 600-700W PSU.

Moving on to the APFC components, we can see a basic configuration with one transistor and one diode as the active components. The large 400V/390μF APFC capacitor is supplied by Nichicon. The primary inversion stage is relatively simple as well, with two high efficiency MOSFETs forming a typical half-bridge design.

 

Four MOSFETs form the synchronous rectification stage on the secondary of the main transformer, generating the 12V line of the unit. The 5V and 3.3V lines are being derived via DC to DC conversion circuits. All of the secondary capacitors, electrolytic and polymers alike, are provided by Nippon Chemi-Con, with a few stray Su’scon polymer capacitor used for filtering onto the connectors PCB. Su’scon is not a Japanese brand but Enermax advertises “100% electrolytic capacitors”, so their advertising campaign technically is accurate.

 

Introduction, Packaging & Bundle Cold Test Results
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  • jrs77 - Friday, June 30, 2017 - link

    SFX-L is the way to go, as these regular SFX-PSUs do struggle with thermal issues due to the small 80mm fan used.
    I have two Silverstone SFX PSUs. One 450W with 80mm fan and one 500W SFX-L with a 120mm fan. The difference in temperatures and noise-levels is huge.
    Reply
  • Alistair - Friday, June 30, 2017 - link

    Should try the Corsair 450W SFX power supply. It is my most satisfying purchase ever. No need for SFX-L. Reply
  • nijimon - Monday, July 3, 2017 - link

    Agreed, the 92mm fan on the Corsair doesn't spin at system idle on my rig (Haswell i5, 2 SSDs, 1 HDD, RX470 and WiFi card on a Mini ITX mobo). It will make noise during gaming, but every fan is spinning by then, it will however spin down when the load drops unlike what I read about the Silverstone units. There is also a 600W version. Reply
  • DanNeely - Friday, June 30, 2017 - link

    While dual gpu is unlikely in the systems this is likely to be used with. 2x 8pin connectors can run a pair of 225w cards. Combined with a full power desktop CPU and 80% load seems doable even without an overclock. Reply
  • prateekprakash - Saturday, July 1, 2017 - link

    I have an Enermax Revolution SFX 650 power supply in an NCASE M1.

    One sata power cable with 3 sata power points is being used to power 4 things:
    1. An 8 TB 3.5" HDD
    2. A 5 TB 2.5" HDD
    3. A Swiftech 8 way PWM Fan splitter
    4. An EK XTOP REVO D5 PWM Plexi Pump.

    I am using a "SATA converts to right angle SATA + molex pin" adapter to split one of the SATA power points between fan splitter and the pump.

    http://www.performance-pcs.com/sata-15pin-converts...

    My question is, is the SATA power cable sufficient to supply the power, or am I at risk?

    For your reference, the SATA power cable is modular with 6pin pcie looking connector on the PSU side.(which in my guess would be able to supply 75 watts, wouldn't it?)

    I went this route because the pump needs a molex connector, and adding the molex cable would be quite messy inside the case, especially because I have a custom cpu + GPU water loop in there with a 240 rad.

    500px.com/iamprateekprakash/galleries/ncase-m1-v5-0-build-log
    Reply
  • prateekprakash - Saturday, July 1, 2017 - link

    Also, in my case the psu fans keeps spinning even when the desktop is idling, sipping ~70watts. Perhaps because of the higher temps (ambient temperature is ~28° here)... I was quite disappointed because I expected it to be in fanless mode all the time (my config is i7 6700, gtx 1060, 1 3.5" HDD, 1 2.5" HDD, 1 D5 Pump, and I measured ~170w from the wall in unigine heaven and max 224w in FIFA 17 demo) Reply
  • HomeworldFound - Saturday, July 1, 2017 - link

    You're fine with that build. Your pump is going to run at 37w maximum and you don't need to run it anywhere near full speed. Keeping your power supply fan running in that build would be beneficial anyway. Reply
  • nwarawa - Wednesday, July 5, 2017 - link

    Sleeve bearing fan? Instant fail. I would rather have some decent middle-ground capacitors like Teapo if it meant getting a at least modified sleeve bearing (rifle,etc). It's an unbalanced design. Anything over $50, there is no excuse. Reply

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