Seasonic Platinum Fanless 520 W Power Supply Review

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Introduction

The Seasonic Platinum Fanless 520 W (a.k.a. SS-520FL) is, as the name suggests, a fanless power supply with the 80 Plus Platinum certification, targeted to users building a quiet computer. It also comes with a fully modular cabling system. Let’s see if this new release deserves our recommendation.

Seasonic Platinum Fanless 520wFigure 1: Seasonic Platinum Fanless 520 W power supply

Seasonic Platinum Fanless 520wFigure 2: Seasonic Platinum Fanless 520 W power supply

The Seasonic Platinum Fanless 520 W is 6.3” (160 mm) deep.

The modular cabling system from this power supply has 10 connectors: two for the main motherboard power connector, four for video card and ATX12V/EPS12V connectors, and four for peripheral and SATA connectors. This power supply comes with the following cables:

  • Main motherboard cable with a 20/24-pin connector, 23.6” (60 cm) long
  • One cable with two ATX12V connectors that together form an EPS12V connector, 25.2” (64 cm) long
  • Two cables, each with one six/eight-pin connector for video cards, 23.6” (60 cm) long
  • One cable with four SATA power connectors, 15.7” (40 cm) to the first connector, 4.7” (12 cm) between connectors
  • One cable with two SATA power connectors, 11.8” (30 cm) to the first connector, 4.7” (12 cm) between connectors
  • One cable with three peripheral power connectors, 15.7” (40 cm) to the first connector, 4.7” (12 cm) between connectors
  • One cable with two peripheral power connectors, 11.8” (30 cm) to the first connector, 4.7” (12 cm) between connectors
  • One adapter to convert a standard peripheral power connector into a floppy disk drive power connector

All wires are 18 AWG, which is the minimum recommended gauge.

The number of connectors is outstanding for a 520 W power supply.

Seasonic Platinum Fanless 520wFigure 3: Cables

Let’s now take an in-depth look inside this power supply.

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Author: Gabriel Torres

Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.

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