Seasonic X-Series 850 W Power Supply Review

Main Specifications

The specs of the Seasonic X-Series 850 W include:

• Standards: NA
• Nominal labeled power: 850 W
• Measured maximum power: 998.4 W at 44.8° C ambient
• Labeled efficiency: 87% at light (20% or 170 W) and full loads, and 90% at typical load (50% or 425 W), 80 Plus Gold certification
• Measured efficiency: Between 86.5% and 90.7% at 115 V (nominal, see complete results for actual voltage)
• Active PFC: Yes
• Modular Cabling System: Yes, full
• Motherboard Power Connectors: One 20/24-pin connector, one EPS12V connector, and two ATX12V connectors that together form an EPS12V connector
• Video Card Power Connectors: Four six/eight-pin connectors on separate cables
• SATA Power Connectors: Eight on three cables
• Peripheral Power Connectors: Eight on two cables
• Floppy Disk Drive Power Connectors: Two, if the included adapter is used
• Protections (as listed by the manufacturer): Over voltage (OVP), under voltage (UVP), over power (OPP), over current (OCP), over temperature (OTP), and short-circuit (SCP) protections
• Are the above protections really available? Yes
• Warranty: Five years
• More Information: https://www.seasonicusa.com
• Average Price in the US*: USD 200.00

* Researched at Newegg.com on the day we published this review.