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Seasonic Platinum Fanless 520W Power Supply Review

The Seasonic Platinum Fanless 520W Power Supply ships with a warning notice wrapped around the chassis. As this unit is passively cooled it is important to ensure that the warm air can easily escape.

There are also several vents on the side panels to further improve cooling.

One side of the power supply is fully vented with a power switch and connector set to the side.

The other side of the chassis contains all the connectors for the modular cables. At the side of this panel is a venting hole to further help with heat removal.

Seasonic Platinum Fanless 520W Power Supply
DC Output
+3.3V
+5V
+12V
-12V
+5Vsb
Max Output
20A
20A
43A
0.5A
2.5A
Total Power 100W 516W 6W 12.5W
520W

The upper side of the chassis has some venting holes, however it should be installed with this side facing down. The Seasonic Platinum Fanless 520W can deliver 43A on the +12V output, for 516Watts of the total power.

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7 comments

  1. that is fantastic. what a design

  2. yeah I agree, they nailed it with that one. only thing is, very few people will spend that money on a 520W unit, even if it is amazing. just the way it is.

  3. Wow that really is spectacular

  4. They make a lot of great power supplies, including a load for other companies! I would rather buy from seasonic directly that one of hteir partners.

  5. I prefer the flat cables to the sleeved ones, they t ake up less space, especially in a mini itx case.

  6. on page 6:
    “The large fan maintains good temperatures throughout, rising to a 15c above ambient intake threshold at full load”

    What large fan?

  7. an invisible fan that doesn’t exist? fixed that!