Turbo Boost
|
Whether
the processor uses Intel Turbo Boost Technology, which allows the processor to
automatically increase its frequency if it is running below power, temperature,
or voltage specifications. This can be one of the following:
-
disabled—The processor does not increase its
frequency automatically.
-
enabled—The processor uses Turbo Boost Technology if
required.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Enhanced Intel Speedstep
|
Whether
the processor uses Enhanced Intel SpeedStep Technology, which allows the system
to dynamically adjust processor voltage and core frequency. This technology can
result in decreased average power consumption and decreased average heat
production. This can be one of the following:
-
disabled—The processor never dynamically adjusts its
voltage or frequency.
-
enabled—The processor utilizes Enhanced Intel
SpeedStep Technology and enables all supported processor sleep states to
further conserve power.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure your
operating system supports this feature.
|
Hyper Threading
|
Whether
the processor uses Intel Hyper-Threading Technology, which allows multithreaded
software applications to execute threads in parallel within each processor.
This can be one of the following:
-
disabled—The processor does not permit
hyperthreading.
-
enabled—The processor allows for the parallel
execution of multiple threads.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure the
operating system supports this feature.
|
Core Multi Processing
|
Sets the
state of logical processor cores per CPU in a package. If you disable this
setting, Intel Hyper Threading technology is also disabled. This can be one of
the following:
-
all—Enables multiprocessing on all logical processor
cores.
-
1 through
n—Specifies the number of logical
processor cores per CPU that can run on the server. To disable multiprocessing
and have only one logical processor core per CPU running on the server, choose
1.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure your
operating system supports this feature.
|
Execute Disabled Bit
|
Classifies memory areas on the server to specify where the
application code can execute. As a result of this classification, the processor
disables code execution if a malicious worm attempts to insert code in the
buffer. This setting helps to prevent damage, worm propagation, and certain
classes of malicious buffer overflow attacks. This can be one of the following:
-
disabled—The processor does not classify memory
areas.
-
enabled—The processor classifies memory areas.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure your
operating system supports this feature.
|
Virtualization Technology (VT)
|
Whether
the processor uses Intel Virtualization Technology, which allows a platform to
run multiple operating systems and applications in independent partitions. This
can be one of the following:
-
disabled—The processor does not permit
virtualization.
-
enabled—The processor allows multiple operating
systems in independent partitions.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
Note
|
If you
change this option, you must power cycle the server before the setting takes
effect.
|
|
Direct Cache Access
|
Allows
processors to increase I/O performance by placing data from I/O devices
directly into the processor cache. This setting helps to reduce cache misses.
This can be one of the following:
-
disabled—Data from I/O devices is not placed
directly into the processor cache.
-
enabled—Data from I/O devices is placed directly
into the processor cache.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Processor C State
|
Whether
the system can enter a power savings mode during idle periods. This can be one
of the following:
-
disabled—The system remains in a high-performance
state even when idle.
-
enabled—The system can reduce power to system
components such as the DIMMs and CPUs.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure your
operating system supports this feature.
|
Processor C1E
|
Allows
the processor to transition to its minimum frequency upon entering C1. This
setting does not take effect until after you have rebooted the server. This can
be one of the following:
-
disabled—The CPU continues to run at its maximum
frequency in the C1 state.
-
enabled—The CPU transitions to its minimum
frequency. This option saves the maximum amount of power in the C1 state.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Processor C3 Report
|
Whether
the processor sends the C3 report to the operating system. This can be one of
the following:
-
disabled—The processor does not send the C3 report.
-
acpi-c2—The processor sends the C3 report using the
advanced configuration and power interface (ACPI) C2 format.
-
acpi-c3—The processor sends the C3 report using the
ACPI C3 format.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
On the
Cisco UCS B440 Server, the BIOS Setup menu uses enabled and disabled for these
options. If you specify acpi-c2 or acpi-c2, the server sets the BIOS value for
that option to enabled.
|
Processor C6 Report
|
Whether
the processor sends the C6 report to the operating system. This can be one of
the following:
-
disabled—The processor does not send the C6 report.
-
enabled—The processor sends the C6 report.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Processor C7 Report
|
Whether
the processor sends the C7 report to the operating system. This can be one of
the following:
-
disabled—The processor does not send the C7 report.
-
enabled—The processor sends the C7 report.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
CPU Performance
|
Sets the
CPU performance profile for the server. This can be one of the following:
-
enterprise—For M3 servers, all prefetchers and data
reuse are enabled. For M1 and M2 servers, data reuse and the DCU IP prefetcher
are enabled, and all other prefetchers are disabled.
-
high-throughput—Data reuse and the DCU IP prefetcher
are enabled, and all other prefetchers are disabled.
-
hpc—All prefetchers are enabled and data reuse is
disabled. This setting is also known as high-performance computing.
|
Max Variable MTRR Setting
|
Allows
you to select the number of mean time to repair (MTRR) variables. This can be
one of the following:
-
auto-max—BIOS uses the default value for the
processor.
-
8—BIOS uses the number specified for the variable
MTRR.
-
Platform Default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|