2nd – select Unlock CPU Core to Enable and Advanced Clock Calibration to Auto

3rd – If you want a Triple core – select your cores in CPU Core Control

3rd step
Triple core unlock

Fully Unlocked “Quad”

quad 550
Since Oct. 2009, MSI are releasing new BIOS revisions adding new exclusive
Unlock CPU Core
function, for most of AMD platform motherboards.
(please update to latest bios)

MSI AMD motherboard support list
To increase the success rate of “core unlocking,“ MSI strongly recommend you to choose CPU in the “Main Support CPU List” to be the subject of unlocking attempt. Only those CPUs have been confirmed that their concealed cores can be unlocked successfully in many forums.

CPU SUPPORT LIST

Key tags :
Unlock AMD X2,
unlock AMD X3,
unlock AMD X4,
quad core AMD