Seasonic X-Series KM3 650 W Power Supply Review

Main Specifications

The main specifications for the Seasonic X-Series KM3 650 W power supply include:

• Standards: ATX12V 2.3 and EPS12V 2.91
• Nominal labeled power: 650 W
• Measured maximum power: 786.8 W at 42.8° C
• Labeled efficiency: 80 Plus Gold certification (87% at light/20% load, 90% at typical/50% load, and 87% at full/100% load)
• Measured efficiency: Between 89.2% and 92.0% 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 two cables
• SATA Power Connectors: 10 on three cables
• Peripheral Power Connectors: Five on two cables
• Floppy Disk Drive Power Connectors: one, through an adapter
• Protections (as listed by the manufacturer): Over voltage (OVP), over current (OCP), over power (OPP), over temperature (OTP), and short-circuit (SCP) protections
• Are the above protections really available? Yes.
• Warranty: Seven years
• Real Manufacturer: Seasonic
• More Information: https://www.seasonicusa.com
• Average Price in the U.S.*: USD 130.00

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