Man I usually keep my tornado on Medium with my fan controller. The light turns RED when the knob hits 7v so I keep it probably at 8v right before the light turns red and it's still the most prominant sound in my case. Mind you I got 9 case fans, 2 of them are blower style fans like you'd find in the coolermaster jet series and even with everything else on HIGH you'll here the tornado over everything. If all fans are on high you can hear the computer down the hall lol so I only put it on high when I'm gaming cause I use headphones anyway