Seasonic Platinum Series Fanless 520 W

Seasonic Platinum Series Fanless 520 W

Packaging, Contents & Exterior »

Specifications

Seasonic SS-520FL Features & Specs
Max. DC Output520W
PFCActive PFC
Efficiency80 PLUS Platinum
Operating temperature0°C - 50°C
ProtectionsOver Voltage Protection
Under Voltage Protection
Over Current Protection
Over Power Protection
Over Temperature Protection
Short Circuit Protection
CoolingFanless
Dimensions150 mm (W) x 86 mm (H) x 160 mm (D)
Weight2.0 kg
ComplianceATX12V v2.31, EPS 2.92
Warranty7 years
Price at time of review (exc. VAT)$149.90 (MSRP)


Efficiency is Platinum and the maximum operation temperature is 50°C, which is pretty special given that the unit doesn't have a fan to cool it down. It has all available protection features, and that includes OTP (Over Temperature Protection), something that is pretty crucial to a fanless unit. The unit's footprint is pretty compact with a width of 160 mm, and its warranty is really long at seven years. Seasonic seems to be pretty confident about this model's longevity even though the lack of a cooling fan means higher internal temperatures than those found inside a normal PSU. The price looks pretty stiff, but is, actually, fine for a fanless PSU, especially if we consider that other fanless units with less features and a lower performance are much more expensive.

Seasonic SS-520FL Power Specs
Rail3.3V5V12V5VSB-12V
Max. Power20A20A43A2.5A0.5A
100W516W12.5W6W
Total Max. Power520W


The single +12V rail can deliver the unit's full power, which makes it quite strong and easily capable of supporting two mid-level VGAs. Seasonic will hopefully consider equipping each cable with two PCIe connectors instead of one.

The minor rails have enough power to meet the requirements of a modern system and the PSU's overall capacity. The 5VSB rail does feature the minimum power that a modern PSU should deliver on this rail.

Cables & Connectors, Power Distribution

Modular Cables
ATX connector (600mm)20+4 pin
4+4 pin EPS12V (650mm)1
6+2 pin PCIe (600mm)2
4 pin Molex (410mm+125mm+125mm)3
4 pin Molex (305mm+125mm)2
SATA (390mm+115mm+115mm)3
SATA (300mm+115mm)2
FDD (+150mm)1


All cables are pretty long, and the distance amongst all connectors will suffice in most cases. The number of SATA and peripheral connectors is adequate for the capacity of the PSU, but the number of PCIe connectors is pretty small, and two additional PCIe connectors would be ideal.

The EPS and PCIe cables are fully sleeved, but the SATA and peripheral connectors use ribbon cables. All gauges are black, which will help modders hide them well. All connectors use 18AWG wires as recommended by the ATX spec.

We do not have anything to comment on about this PSU's power distribution since it features a single +12V rail.
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