Thermaltake SMART Series SP-750M 750W ATX 12V V2.3 & EPS 12V SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply Fans: 82-88% efficiency @ 20-100% load Main Connector: 24Pin +12V Rails: Single PCI-Express Connector: 4 x 6+2-Pin SATA Power Connector: 9 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