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Turbo button
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<p>On <a href="/facts/IBM_PC_compatible/zGUpl7Sh">IBM PC–compatible</a> computers, the turbo button selects one of two run states: the default "turbo" speed or a reduced speed closer to the <a href="/facts/Intel_8086/sS9dlSdK">Intel 8086</a> CPU. It was relatively common on computers using the <a href="/facts/Intel_80286/rucEU93g">Intel 80286</a>, <a href="/facts/I386/ag5eSgWv">80386</a> and <a href="/facts/I486/2zfEAXAw">80486</a> processors, from the mid 1980s to mid 1990s. The name is inspired by <a href="/facts/Turbocharger/xuabwHlB">turbocharger</a>, a device which increases an engine's power and efficiency. When pressed, the "turbo" button is intended to let a computer run at the highest speed for which it had been designed. </p>