Dell XPS 13 9315 Service Manual page 55

Table 16. System setup options—Virtualization menu (continued)
Virtualization Support
Enable OS Kernel DMA Support
Table 17. System setup options—Performance menu
Performance
Multi-Core Support
Multiple Atom Cores
Intel SpeedStep
Enable Intel SpeedStep Technology
C-State Control
Enable C-State Control
Intel Turbo Boost Technology
Enable Intel Turbo Boost Technology
Intel Hyper-Threading Technology
Enable Intel Hyper-Threading Technology
Dynamic Tuning: Machine Learning
Enable Dynamic Tuning: Machine Learning
Table 18. System setup options—System Logs menu
System Logs
BIOS Event Log
Allows you to control the Kernel DMA protection for both internal and external
ports. This option does not directly enable DMA protection in the operating
system. For operating systems that support DMA protection, this setting
indicates to the operating system that the BIOS supports the feature.
NOTE: This option is not available when the virtualization setting for IOMMU
is disabled (VT-d/AMD Vi).
By default, the Enable OS Kernel DMA Support option is enabled.
NOTE: This option is provided only for compatibility purposes, since some
older hardware is not DMA capable.
Enables to change the number of Atom cores available to the operating system.
The default value is set to the maximum number of cores.
By default, the All Cores option is selected.
Enables the computer to dynamically adjust processor voltage and core
frequency, decreasing average power consumption and heat production.
By default, the Enable Intel SpeedStep Technology option is enabled.
Enables or disables the ability of the CPU to enter and exit low-power state.
When disabled, it disables all C-states. When enabled, it enables all C-states that
the chipset or platform allows.
By default, the Enable C-State Control option is enabled.
Enables the Intel TurboBoost mode of the processor. When enabled, the Intel
TurboBoost driver increases the performance of the CPU or graphics processor.
By default, the Enable Intel Turbo Boost Technology option is enabled.
Enables the Intel Hyper-Threading mode of the processor. When enabled, the
Intel Hyper-Threading increases the efficiency of the processor resources when
multiple threads run on each core.
By default, the Intel Hyper-Threading Technology option is enabled.
Enables or disables operating system capability to enhance power tuning
capabilities depending on the detected workloads.
NOTE: This option is available for development only and is not customer
visible.
By default, the Enable Dynamic Tuning: Machine Learning option is enabled.
System setup 55