Kareem wrote9 Years old -> PC 33MHZ ( Turbo 66MHZ ) Prince of Persia on Windows 3.11
Haha... turbo... I never fully understood the usefulness of these "turbo" switches. Someone told me that it's so you can slow down your computer to play old games or run old software (which would expect a lower frequency).
Back then there was no power management, ACPI, variable frequencies, variable speed fans (in fact there were no fans at all, lol), temperature monitors, virtual machines...
So I guess people needed a crude way to control the frequency of their CPU, just in case...
It's surprising to see how much innovation happened in the 90ies, then it stopped... After all Windows nowadays is not much more then Windows 2000/XP with a thick sugar coating - hardware innovation also slowed down considerably, although the specs and performance of various components still evolve.