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Enermax launches the silent Digifanless 550W PSU

by Mark Tyson on 5 March 2015, 12:26

Tags: Enermax (8093.TWO)

Quick Link: HEXUS.net/qacppg

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PC component maker Enermax has launched a passive 550W digital power supply to mark its 25th anniversary. The Digifanless 550W PSU is described as a silent, digital, highly efficient "masterpiece for real enthusiasts". It is promoted as a perfect component choice for makers of silent PCs, multimedia stations and HTPCs.

HEXUS saw a working sample of the Enermax Digifanless 550W PSU at CeBIT in March 2014 where we were told it would launch in Q3 2014. However here we are in Q1 2015 and the press release we received today says that European sales of this PSU will begin immediately after CeBIT 2015 (the Hanover show runs from 16th – 20th March 2015).

The fully modular Enermax Digifanless 550W PSU is the first digital and fanless PSU from the company. It can achieive a peak efficiency of 93 per cent and is 80 PLUS® Platinum certified. Enermax promises rock-stable output voltages for maximum system performance. The digital interface offers readings and control of essential power parameters such as voltage, current, efficiency or temperature via the supplied Enermax Zero Delay Power Monitor System (ZDPMS) software. ZDPMS can warn users of critical temperatures, overvoltage or overcurrent – which can be set by the user. The software also comes with an energy consumption calculator totally energy costs and your CO2 footprint.

Component choice in designing this new PSU has been crucial. Enermax says that its core components of Japanese electrolytic 105°C capacitors, heavy-duty MOSFETs and a high-density array of aluminium heatsinks can keep this PSU running without a hitch in 40°C ambient temperatures. Furthermore a 'Copper Bridge Array' technology significantly reduces the PSU's electrical resistance, improves voltage regulation and maximizes efficiency. These component and design choices help the PSU achieve its great efficiency rating, which is compliant with the latest EU eco-design regulation ErP Lot 6 2013.

As mentioned above, this PSU should become available in Europe from mid-to late March. Buyers will receive a 5-year warranty. Pricing is yet to be announced.



HEXUS Forums :: 10 Comments

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Very nice - i'l keep this in mind for my next build
Impressive. To be fanless, I assume it needs to be efficient and prevent power being wasted as heat. Looks like a few mandatory EU regulations (up yours Farage, I think this is a good thing :P) are implemented :

ErP Lot 6 2013 - all PSUs to have no less than 50% efficiency under 100mA load in standby mode, at 230Vac input voltage

617/2013 - Enermax has a specific page about this - http://www.enermax.co.uk/eu-verordnung617-2013/ - but this new EDF550AWN isn't listed there yet.

Looks like the Platimax series are even more efficient. I wonder why they can't be fanless?
Peter Parker;33430
Impressive. To be fanless, I assume it needs to be efficient and prevent power being wasted as heat. Looks like a few mandatory EU regulations (up yours Farage, I think this is a good thing :P) are implemented :

ErP Lot 6 2013 - all PSUs to have no less than 50% efficiency under 100mA load in standby mode, at 230Vac input voltage

617/2013 - Enermax has a specific page about this - http://www.enermax.co.uk/eu-verordnung617-2013/ - but this new EDF550AWN isn't listed there yet.

Looks like the Platimax series are even more efficient. I wonder why they can't be fanless?

I doubt that EU reg has anything to do with it. At 100mA load the PSU could be 5% efficient, even assuming that's on the 12V line, that would only be 24W of heat to dissipate - easily within the bounds of a couple of medium-sized heatsinks.

The reason it can be fanless is because it remains efficient at high loads - much more relevant heat-wise than low loads.

Edit: Platinum rating means minimum of 91% efficient at 100% load (240V supply), so at 550W it needs to dissipate at most roughly 54.4W heat.
Any idea on the OEM? Looks decent.
Ok - I get fanless, low noise, etc. But. I've just completed an MATX build, and the case only has a 92mm exhaust, with the PSU mounted at the top the 120mm fan is an important part of the exhaust design. It does have a 140mm intake tho…