XIGMATEK FURY GD 850W

Smart ECO On: PSU Fan Will Not Spin during System Startup and Idle Loading, It Will Start to Spin When PSU Reach Light to Mid Loading (Approx. at 40% PSU Loading), Fan RPM Will Self-Adjust Smartly According to PSU Actual Operating Loading %.
Smart ECO Off: PSU Fan Will Spin At the System Startup, Fan RPM Will Self-Adjust Smartly According to PSU Actual Operating Loading %.