Ultra X4 500 W power supply specs include:

• Nominal labeled power: 500 W.
• Measured maximum power: 554.9 W at 49.6º C.
• Labeled efficiency: 85% typical (i.e., under 50% load), 80 Plus Bronze certified (82% minimum at 20% and 100% loads; 85% minimum at 50% load).
• Measured efficiency: Between 82.1% and 85.9% at 115 V (nominal, see complete results for actual voltage).
• Active PFC: Yes.
• Modular Cabling System: Yes, full.
• Motherboard Power Connectors: One 24-pin connector, one ATX12V connector and one EPS12V connector (all using the modular cabling system).
• Video Card Power Connectors: One six-pin connector and one six/eight-pin connector (on individual cables).
• SATA Power Connectors: Nine in three cables.
• Peripheral Power Connectors: Nine in four cables.
• Floppy Disk Drive Power Connectors: Two in two cables.
• Protections: Over voltage (OVP, not tested). Short-circuit protection (SCP) present and working.
• Warranty: Three years or lifetime, if you register the product.
• Real Manufacturer: Andyson
• More Information: http://www.ultraproducts.com
• Average price in the US*: USD 99.00

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