Yes, Turbo. Like, you have no idea just how fast this friggin thing is when you push the Turbo button. 2 Digits baby!
Turbo on this comp added 10MHz of raw unorthodox word processing power!...(which gave it a top speed of like 20Mhz!!)
ps. what reason would you have to turn off the turbo feature? did it use like 1mWh more?