и точно. есть в асми такая опция.
Requirements for Turbocore Mode
Changing Turbocore Mode.
The setting can be altered from HMC GUI, HMC CLI, or ASMI.
To change using the HMC GUI, you should select the server properties, then click the Advanced tab. Change Display advanced setting to Processor Performance, change Next TurboCore state to the desired setting, and click OK.
The new setting goes into effect on the next platform IPL.