Seasonic X-400 Fanless Power Supply Review

Main Specifications

The specs of the Seasonic X-400 Fanless include:

• Nominal labeled power: 400 W
• Measured maximum power: 602.2 W at 40.2° C ambient
• Labeled efficiency: 87% at light (20% or 80 W) and full loads, and 90% at typical load (50% or 200 W), 80 Plus Gold certification
• Measured efficiency: Between 87.7% and 91.5% at 115 V (nominal, see complete results for actual voltage)
• Active PFC: Yes
• Modular Cabling System: Yes
• Motherboard Power Connectors: One 20/24-pin connector and two ATX12V connectors that together form an EPS12V connector
• Video Card Power Connectors: One six/eight-pin connector
• SATA Power Connectors: Five on two cables
• Peripheral Power Connectors: Five on two cables
• Floppy Disk Drive Power Connectors: Two, if the included adapter is used
• Protections: Over voltage (OVP), under voltage (UVP), over power (OPP), over current (OCP), over temperature (OTP),
  and short-circuit (SCP) protections
• Warranty: Five years
• More Information: https://www.seasonicusa.com
• MSRP in the US: USD 140.00