Corsair HX850W power supply main specs include:

• ATX12V 2.3
• EPS12V 2.91
• Nominal labeled power: 850 W at 50º C.
• Measured maximum power: 1,000 W at 54.9º C.
• Labeled efficiency: Up to 90%, 80 Plus Gold Certified.
• Measured efficiency: Between 84.8% and 90.0% 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: Six six/eight-pin connectors (two permanently attached to the power supply, four using the modular cabling system).
• Peripheral Power Connectors: Twelve in three cables (using the modular cabling system).
• Floppy Disk Drive Power Connectors: Two converted from two peripheral power plugs.
• SATA Power Connectors: Twelve in four cables (using the modular cabling system).
• Protections: Over current (OCP), over voltage (OVP, not tested), over power (OPP), under voltage (UVP) and short-circuit (SCP, tested and working) protections.
• Warranty: Seven years.
• More Information: http://www.corsair.com
• Average price in the US*: USD 190.00.

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