Thermaltake SMART Series SP-650PCBUS 650W ATX 12V 2.3 80 PLUS BRONZE Certified Active PFC Power Supply Fans: 1 x 120mm Fan (1800 RPM +/- 10%) Main Connector: 24Pin +12V Rails: Single PCI-Express Connector: 2 x 6+2-Pin SATA Power Connector: 6 Power Good Signal: 100-500ms Hold-up Time: 16msec (minimum) @ 80% of full load at 115Vac / 230Vac input. Efficiency: 82 - 88% efficiency @ 20-100% load