How do i Turn on Turbo boost mode

Press CTRL+ALT+DEL and select task manager.

Go to "Performance Tab" and select CPU from the list at the side. if you see the CPU speed is more than the base speed of your CPU, then the turbo boost works.

You should see your CPU frequency changing below the graph depending on your load.

If your using Windows 8 this can report false clock speeds though, for instance mine reported 5.76GHz at max turbo speeds which is totally false.

For better and more accurate readings of clock speeds download this program: 
CPU-Z

This will also show your clock speeds changing depending on CPU load, they should also show you voltage read outs, and also the program can tell you literally everything about your CPU from process (in nanometers), cache sizes, codename, revision number, etc, etc. It will even show you things about your RAM, there model, speeds, CAS timings, and also motherboard manufacturer, BIOS version, etc,

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