External Appearance

A quick look at the Fractal Design Ion+ 760P PSU reveals a sleek design and a unique chassis that is not quite like most other ATX PSUs. Officially, the PSU isn't quite ATX compliant either; it adheres to everything except the ATX size specification, where the chassis is a longer 150 mm deep, a necessary adjustment in order to fit a 140 mm cooling fan. The chassis of the PSU is coated with a satin black paint, which is excellently applied and highly resistant to smears and fingerprint marks.

Fractal Design split the standard sticker with the electrical specifications and certifications of the PSU into two parts, placing the sticker with the basic electrical specifications on the rear side of the PSU and making it visible from the rear of the PC case. The rear side is, in terms of aesthetics, interesting, as the designer ditched the standard honeycomb or circular vents and implemented a Morse code dot-like pattern design. Other than that, we can also spot a regular on/off switch and the AC cable receptacle.

 

The bottom and top sides of the PSU are entirely clean and smooth. Fractal Design went with a parallel wire fan finger guard, as it is supposed to reduce aerodynamic noise a little bit in comparison to standard circular guards. The sides of the PSU are almost entirely clean as well, with only a small version of the company’s logo printed on each side.

The front side is perhaps the most interesting part of the PSU. It houses the eleven connectors for the modular cables, with a very subtle legend painted in between the two series of connectors. All of the connectors are black but are keyed, meaning that no cable can be inserted into the wrong connector. There is also a “Zero RPM” switch that turns the unit’s hybrid cooling mode on or off. By default, the Ion+ PSU will not start the fan at all until temperatures require it to do so, but users can opt to force the fan to stay on at all times should they wish to do so. Note that this will not affect the thermal circuitry of the PSU, which will still adjust the fan’s speed according to the operating conditions.

Internal Design

Fractal Design rebranded the cooling fan of the PSU, and we could not identify the original manufacturer. Regardless, we can tell that it is a 140 mm fan with a fluid dynamic bearing (FDB) engine. It has a maximum rotational speed of about 1800 RPM. Fractal Design also claims that they greatly optimized the fan’s design by adding a counter-balance magnet to reduce axial tension on the bearing and tweaked the design of the blades to reduce the fan’s noise.

The OEM behind the creation of the Fractal Design Ion+ 760P PSU is Sirfa (also known as High Power), a manufacturer known for their mid-range designs. This, however, is not a platform that we have seen before. Fractal Design’s involvement on the design of the PSU is very apparent, as Sirfa rarely uses good heatsinks, especially on their higher efficiency products. The heatsinks of the Ion+ 760P are strikingly advanced, especially considering the lower-than-average amount of heat generated by the PSU thanks to its high efficiency and overall lower power output.

The input filtering stage is textbook in design and consists of four Y capacitors, two X capacitors, two filtering inductors, and one surge-suppressing MOV. The unit has two input conversion bridges that can be found on their own small heatsink. The enclosed APFC coil and two Rubycon 400V/470μF capacitors stand right between the heatsinks that hold the APFC and primary inversion circuit parts.

The primary inversion circuit is relatively simple, with two MOSFETs forming a standard LLC resonant half-bridge topology. The unit then generates a single 12V line via the MOSFETs that are attached to the bottom side of the PCB. The slim silver heatsinks on top of the PCB assist on the cooling of the secondary side MOSFETs, which are also dissipating part of their losses via the chassis of the PSU. A secondary vertical PCB holds the DC to DC conversion circuits that generate the 3.3V and 5V lines. Finally, the generated power is transferred to the PCB that holds the cable connectors via a soldered bar, minimizing losses.

Introduction, Packaging & Bundle Cold Test Results (Room Ambient Temperature)
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  • Jane_JJ - Wednesday, August 28, 2019 - link

    I thought people on this site were better than that -"I am surprised how narrow minded most Americans are about globalization," that could be said about almost any other country on the planet. Brexit being the comically obvious example. We just have the largest English speaking population and trashing on "americas" is like trashing on one age demographic for the media. While not necessarily wrong there just doing it for the clicks/views. Also while globalization is very much increasing make no mistake we are still about a quarter of the GLOBAL GDP. Almost any product on the market at any reasonable scale is made for the US market and adapted for other countries. (I’m not saying this is a or bad thing) Do some research into standards body and that will become apparent. Reply
  • fist003 - Wednesday, August 14, 2019 - link

    this Reply
  • Skeptical123 - Wednesday, August 14, 2019 - link

    Zepi your point "Over 95% of world population doesn't live in US" is "irrelevant" in this case. As the US makes up ~24% of GLOBAL GDP. Ie we are the worlds largest consumers and while counties like China are close as I'm sure you know they play by a different rule book over there. So laws that are very applicable in the "western world" are not a factor (at least yet). So these stickers are very much for the US market even if they only are applicable in say Germany or the UK. Reply
  • evernessince - Tuesday, August 6, 2019 - link

    No, it wouldn't pass muster in court. The law doesn't make exceptions of non-user serviceable parts. If it did then every manufacturer would simply declare their products "non-serviceable". FYI power supplies ARE user serviceable if you discharge the capacitors, it's just not recommended for amateurs. To a certain degree all parts are serviceable assuming you have enough skill. The law isn't going to start guessing which are and which aren't.

    If companies want to void warranties they are going to have to prove the customer damaged the item, not because of some arbitrary definition of what is and isn't serviceable or some silly sticker.
    Reply
  • Peichen - Wednesday, August 7, 2019 - link

    Another Asian product with an European label for premium Reply
  • AlyxSharkBite - Saturday, August 17, 2019 - link

    They’re not illegal they are unenforceable in the US (regardless of what some people say about the user serviceable) but these are sold in the North America (content not region of the US) that includes markets such as Canada where it might be enforceable (I don’t know Canadian laws). It’s not a US Exclusive product. That’s why they are on there. Reply
  • YB1064 - Tuesday, August 6, 2019 - link

    I haven't seen this in any PSU review till date, but in addition to quoting ripple (rms?), it would be useful to show a voltage power spectrum (V^2/Hz vs Hz). This will clearly show noise at various frequencies. You could also integrate this PSD to get cumulative noise (should be equivalent to RMS).

    I would not suggest this to any other run of the mill review site, but you guys seem to do a good job of providing technical analysis and details.

    PS: I can post a MATLAB script to do this if you want.
    Reply
  • umano - Tuesday, August 6, 2019 - link

    That sounds good, upvote! Reply
  • Chaitanya - Tuesday, August 6, 2019 - link

    Compared to seasonic how good are the sirfa units? Reply
  • kyuu - Tuesday, August 6, 2019 - link

    While I can't speak from experience, the article itself seems to answer your question. Sirfa units, by themselves, are generally not high quality. However, Fractal's modifications to the platform has resulted in a product that is top-tier, and appears to beat other brand's products, even Seasonic, in most every measure. Reply

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