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Enermax DigiFanless 550W Review


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The top of the power supply has no fan installed, so its basically a simple grill, sprayed and attached to the metal chassis.
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The filtering stage has two Y capacitors and a single X capacitor. The filtering stage continues to the main PCB with one Y capacitor and four polyfilm capacitors with two ferrite coils, an MOV and a CM choke. Four mosfets from Toshiba are attached to large passively cooled heatsinks.

On the secondary side, the 3.3V and 5V are generated from the 12V by DC-DC conversion. Voltage modulation is handled by two additional PCB, which are placed on either side of the supply.
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Always good to see a manufacturer not skimping and using high grade Japanese capacitors. The primary capacitor is 105c,  400V 470uF rated, and by Nippon Chemi Con, from their KMQ family.

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2 comments

  1. valgarlienheart .

    Damn I would have loved this! But I can’t justify a £100ish premium just for being silent.

    No votes yet.
  2. Expensive, and unless you could realistically make the entire system fanless, there is little point in the PSU being fanless, and I doubt a system that needed 500W could be – and the digital feature also seems out of place at this power level.
    I expect they will do a non-digital version at a better price point.

    No votes yet.