Dell XPS 15 9530 Service Manual page 60

Table 9. System setup options—Secure Boot menu
Secure Boot
Enable Secure Boot
Secure Boot Mode
Table 10. System setup options—Expert Key Management menu
Expert Key Management
Enable Custom Mode
Custom Mode Key Management
Table 11. System setup options—Performance menu
Performance
Multi-Core Support
Active Cores
Intel SpeedStep
Enable Intel SpeedStep Technology
Enable C-State Control
Intel Turbo Boost Technology
Enable Intel Turbo Boost Technology
Intel Hyper-Threading Technology
Enable Intel Hyper-Threading Technology
60 System setup
Enables or disables the computer to boos using only validated boot software.
Default: ON
NOTE: For Secure Boot to be enabled, the computer needs to be in UEFI
boot mode and the Enable Legacy Option ROMs option needs to be turned
off.
Selects the Secure Boot operation mode.
Default: Deployed Mode
NOTE: Deployed Mode should be selected for normal operation of Secure
Boot.
Enables or disables the keys in the PK, KEK, db, and dbx security key databases
to be modified.
Default: OFF
Selects the custom values for expert key management.
Default: PK
Changes the number of CPU cores available to the operating system. The
default value is set to the maximum number of cores.
Default: All Cores
Enables or disables the Intel SpeedStep Technology to dynamically adjust
processor voltage and core frequency, decreasing average power consumption
and heat production.
Default: ON
Enables or disables the CPU's ability to enter and exit low-power states.
Default: ON
Enabled or disabled the Intel TurboBoost mode of the processor. If enabled,
the Intel TurboBoost driver increases the performance of the CPU or graphics
processor.
Default: ON
Enabled or disabled the Intel Hyper-Threading mode of the processor. If
enabled, the Intel Hyper-Threading increases the efficiency of the processor
resources when multiple threads run on each core.
Default: ON