Editing Turbo button (section)

== Use ==

The feature was relatively common on systems running [[Intel 80286|286]] to [[Intel 80486|486]] CPUs,<ref name="pcguide2">{{cite web|url=http://www.pcguide.com/opt/opt/misc_Turbo.htm |title=Eliminate Accidentally Turning Off Turbo Mode on Turbo PCs |website=Pcguide.com |date=2001-04-17 |access-date=2020-01-14|archive-url=https://web.archive.org/web/20010417175150/http://www.pcguide.com/opt/opt/misc_Turbo.htm|archive-date=2001-04-17}}</ref>
and less common on [[Pentium]] era computers. The frequency displays largely disappeared or were reprogrammed to display "HI"/"LO", "99", or were replaced with a three-digit display when CPU speeds reached 100&nbsp;MHz, since most systems only had a two-digit display.

As new computers continued to get faster and had a wide variety of available speeds, it became impossible for software to rely on specific CPU speed. As software began to rely on other timing methods, the turbo feature became mostly irrelevant to new programs.<ref name="pcguide">{{cite web|url=http://www.pcguide.com/ref/case/switchTurbo-c.html |title=Turbo Button |website=Pcguide.com |date=2001-04-17 |access-date=2017-03-04| archive-url=https://web.archive.org/web/20010712011825/http://www.pcguide.com/ref/case/switchTurbo-c.html|archive-date=2001-07-12}}</ref><ref name="compute198806">{{cite news | url=https://archive.org/stream/1988-JUn-compute-magazine/Compute_Issue_097_1988_JUn#page/n23/mode/2up | title=Electrifying Software For Today's PC | work=Compute! | date=June 1988 | access-date=10 November 2013 | pages=23 | type=advertisement}} 1988 game advertising automatic compensation for CPU speed.</ref>