How do you disable SpeedStep?

[Pacific Freeze]

I saw that Speed step will increase my performance while it's enabled and thought id try it.
I have a M5A78L-M LX Plus motherboard And a amd FX 6300 Vishera cpu was wondering how you can disable speed-step on it.

Thanks

 

[knight_of_baawa]

Speedstep is Intel-only.