Review Index:

Cyonic AU-450x Fully Modular 450W Power Supply Review

Manufacturer: Cyonic

Introduction and Features


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Introducing Cyonic, a new player in the global PC power supply arena. Founded in 2013, Cyonic’s goal is to become a global brand of high performance computer parts and accessories. The business is starting off by selling power supplies and Cyonic will soon have three product lines: the AU Series (fixed cables), AUx Series (all modular cables), and the Arise Series (sold exclusively in Japan). The AU and AUx Series will both contain three models, ranging in output capacities of 450W, 550W, and 650W. In this review we will take a detailed look at the AU-450x we received for evaluation.

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The new Cyonic AUx Series power supplies feature fully modular cables, quiet operation and high efficiency. And they are housed in a compact chassis that measures only 140mm (5.5”) deep. Cyonic suggests the AUx Series power supplies are “the ideal choice for office use, casual gaming, and Home Theater PCs”. Getting into the PC power supply market might seem a rather daunting task, but Cyonic has partnered with Seasonic as their OEM, which is certainly a good start.

Cyonic AUx PSU Key Features:

•    450W, 550W and 650W models
•    Fully modular cables design
•    Compact ATX chassis: only 140mm (5.5”) deep
•    80 PLUS Gold certified, at least 90% efficiency under 50% load
•    120mm Fluid Dynamic Bearing fan for long life and quiet operation
•    Intelligent Fan Manager for very quiet operation
•    High quality components including 105°C Japanese electrolytic capacitors
•    Compatibility with Intel's 4th Generation Core processors
•    Safety Protections: OPP, OVP, UVP and SCP
•    Conforms to ATX12V v2.31 and EPS 2.92 standards
•    5-Year warranty

Please continue reading our review of the Cyonic AU-450x PSU!!!

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PSU Testing Methodology

Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective’s power supply test bench can place a precise DC load on the PSU under test.  Each power supply is tested under controlled, real-world conditions up to its maximum rated load (at 40ºC), using both 115 VAC and 240 VAC line voltage.  Our current suite of tests includes:

•    DC Load Regulation
•    AC Ripple and Noise
•    Efficiency
•    Differential Temperature
•    Noise

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The Cyonic AU-450x power supply was evaluated on both features and performance.  A full range of equipment was used to test the power supply under controlled load conditions.  

•    (2) CSI3710A Programmable DC load (+3.3V and +5V outputs)
•    (4) CSI3711A Programmable DC load (+12V)
•    (3) 218W Precision resistor load bank (+12V)
•    Switchable precision resistor load bank (-12V and +5VSB)
•    Agilent 34401A digital multimeter (Accuracy ±0.0035% vDC)
•    Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)
•    DS1M12 "StingRay" digital oscilloscope (20M S/s with 12 Bit ADC)
•    Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC
•    Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)

The following cables/connectors were used to connect the AU-450x to the PCPerspective power supply test equipment.
•    (1) 20+4 pin ATX
•    (1) 8-pin EPS/ATX12V
•    (2) 6-pin PCI-E
•    (2) SATA
•    (2) Molex

Video News

July 31, 2015 | 09:21 PM - Posted by BlackDove (not verified)

Its always nice to see Seasonic being rebranded over some junk brand.

The problem is, like the article says, you can buy a Seasonic branded PSU or even an Antec thats also a rebranded Seasonic(some of them have lit fans to differentiate them from Seasonics standard models) for about the same price.

If they want to charge a lot, they should have Seasonic build their with differentiating features. Custom paints, cable sleeves, monitoring sensors or software like Corsairs Flextronics rebrands, or something to entice people to buy it.

Someone informed enough to know its good BECAUSE its a rebranded Seasonic probably wont buy it over a standard Seasonic without some incentive like that.

I use Antecs Seasonics since they go on sale a lot. Thatd be a good reason for this PSU too.

July 31, 2015 | 11:05 PM - Posted by Master Chen (not verified)

"The more the merrier", I guess. I just hope that more competition brings prices further down across the globe.

July 31, 2015 | 11:39 PM - Posted by djotter

Since it is a rebranded Seasonic PSU and is 20mm shorter (quite cool actually) I would probably buy one, but it NEEDS to come in cheaper than a 'known' brand to sell any units.

August 1, 2015 | 12:57 AM - Posted by Master Chen (not verified)

As long as more competitors on the market outright FORCE Corsair to cut down prices for their GODLIKE RM, HX, and AX PSUs, I'll be absolutely fine with this.

August 1, 2015 | 02:03 AM - Posted by BlackDove (not verified)

I hope you realize that a lot of the decent Corsairs are just REBRANDED SEASONICS too. The AXi is rebranded Flextronics.

Most Corsairs are rebranded CWT junk and they DONT MANUFACTURE ANY PSUs. They just rebrand.

I know a lot of people trust Corsair since some of their older PSUs were rebrands of good stuff but i usually tell people to stay away from them. Its like G.Skill with memory. No reason to use them and theyre kind of a ripoff since theyre just rebrands of other companies stuff lol.

August 4, 2015 | 02:08 AM - Posted by Master Chen (not verified)

It's not "rebranding", it's just OEM'ing. These are not same thing. "Rebranding" is when a company either makes a "new" line of products which is essentially re-badged older line (in other words - AMD), OR gets a batch of reference units from some party by default (in example - reference video cards) so that it can sell it under it's name. Corsair's relationship with SeaSonic is nothing like that, because Corsair DIRECTLY OEMs from SeaSonic under the long-=term contract. It's a very well known fact that Corsair OEMs from SeaSonic, and been doing so for many years, this really can't be called "rebranding" simply because SeaSonic makes units DIRECTLY for Corsair, under Corsair's supervision and with Corsair's specific vision on PSUs. This could've been called "rebranding" only in the case if SeaSonic was making ABSOLUTELY THE SAME PSUs for EVERYONE out there to whom it OEMs, but they'r NOT doing it in regards to Corsair because they're working DIRECTLY for Corsair under the long-term contract, so this is not "rebranding" in all actuality. Also, no, Corsair doesn't OEM 100% of all of their PSU units. Only AX, HX, RM, CS and CX lines. If my memory is correct, TX/VS/VX were in-house products.

August 7, 2015 | 02:25 AM - Posted by Mark_GB

Corsair VS is made by Channel Well Technology.

TX and VX were discontinued, so I have no info on those.

But I am fairly certain that Corsair has never made their own power supplies. Even the Corsair CX that is currently made by Channel Well Technology started out in 2009 as a Seasonic made unit.

AX / AXi series 760w - 1200w Seasonic (AX) / Flextronics (AXi)
AX1500i Flextronics
HXi Channel Well Technology
RMi 750w Channel Well Technology

RM 850w Channel Well Technology

CS Great Wall
RM Channel Well Technology (450w - 650w, 1000w) / Chicony (750w)
VS Channel Well Technology

Corsair CX / CXM Channel Well Technology

Corsair SF600 (unknown manufacturer)

So based on that info, only the AX series is now made by Seasonic.

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