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X9SRL Motherboard Series User’s Manual
Package C State Limit
If set to Auto, the AMI BIOS will automatically set the limit on the C-State
package register. The options are C0, C2, C6, and No Limit.
Energy/Performance Bias
This setting allows the user to adjust the fan speed based on performance
(maximum cooling) or energy efciency (maximum energy savings). The
options are Performance, Balanced Performance, Balanced Energy, and
Energy Efcient.
Long duration power limit - this is the processor power consumption limit (in
Watts) during a long duration time window.
Long duration maintained - this is the time in milliseconds where the Long Dura-
tion Power Limit is maintained.
Short duration power limit - During Turbo Mode, the system may exceed the
processor's default power setting and exceed the Short Duration Power limit. By
increasing this value, the processor can provide better performance for a short
duration.
Chipset Conguration
WARNING: Setting the wrong values in the following sections may cause
the system to malfunction.
North Bridge Conguration
This item displays the current IO chipset Revision.
Integrated IO Conguration
Intel
®
VT-d
Select Enabled to enable Intel's Virtualization Technology support for Direct I/O
VT-d by reporting the I/O device assignments to VMM through the DMAR ACPI
Tables. This feature offers fully-protected I/O resource-sharing across the Intel
platforms, providing the user with greater reliability, security and availability in
networking and data-sharing. The settings are Enabled and Disabled.
Data Direct I/O
Select Enabled to enable Intel I/OAT (I/O Acceleration Technology), which sig-
nicantly reduces CPU overhead by leveraging CPU architectural improvements
and freeing the system resource for other tasks. The options are Disabled and
Enabled.
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