I am not sure if i have a faulty PSU or not here. When i use the "silent" mode the fan turns off, as expected, however every few minutes it will ramp up then turn off again which is extremely irritating. Using the "normal" mode the fan seems to run at full speed constantly, i cant measure the fan speed but im assuming it is full speed as its the loudest thing in my case, louder than the 5 x 700 RPM fans of varying sizes. This is all whilst there is ~100w of load on the system and the case door is off (FT02). What gives? I thought these PSU's were silent?