Thermaltake SMART M Series SP-850M 850W ATX12V / EPS12V SLI Certified CrossFire Certified 80 PLUS BRONZE Certified Modular Active PFC Power Supply Fans: 140mm Fan: 2300 R.P.M. ± 10% Main Connector: 24Pin +12V Rails: Yes 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