So, I bought a new computer recently (iBuyPower brand) and the keyboard that came with it has a "Turbo" button.  Just looked up some information on it, and got pretty much the same THING that CH's DICTIONARY has.

A button found on earlier (386 and 486) PC COMPUTERS that would increase or decrease the performance of the computer. This button was needed for backwards compatibility in older programs and games that were written for a specific speed of computer. When faster computers were released, because the programs were written for a slower speed of computer, it would cause the program to run extremely fast, often making them unusable. Using the turbo button a user could slow the computer down allowing them to use these programs.

Today, this button is no LONGER found on computers and for users who would still like to run these older programs we suggest using a software solution such as Mo'Slo, which will trick a program and/or the computer into thinking it's slower than it really is.

One guy SAID the turbo key, in conjunction with F# keys, adjusted the typing rate of his keyboard.  Another said that the turbo button had to be pressed along with the power/sleep buttons on his keyboard, to prevent accidental shutdowns.

I haven't noticed it "do" anything, other than cut my right-shift button in half.  Any thoughts?

http://www.youtube.com/watch?v=3BklC1TUFS8What you read is correct, it's a fairly useless option now.

What is the point of the link that you present?