Turbo Boost set intel-turbo-boost-config 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:
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disabled—The processor does not increase its frequency automatically.
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enabled—The processor utilizes Turbo Boost Technology if required.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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Enhanced Intel Speedstep set enhanced-intel-speedstep-config speed-step |
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:
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disabled—The processor never dynamically adjusts its voltage or frequency.
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enabled—The processor utilizes Enhanced Intel SpeedStep Technology and enables all supported processor sleep states to further conserve power.
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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. |
Hyper Threading set hyper-threading-config 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:
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disabled—The processor does not permit hyperthreading.
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enabled—The processor allows for the parallel execution of multiple threads.
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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 set core-multi-processing-config multi-processing |
Sets the state of logical processor cores in a package. If you disable this setting, Hyper Threading is also disabled. This can be one of the following:
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all—Enables multi processing on all logical processor cores.
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1 through 10—Specifies the number of logical processor cores that can run on the server. To disable multi processing and have only one logical processor core running on the server, select 1.
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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. |
Execute Disabled Bit set execute-disable bit |
Classifies memory areas on the server to specify where where 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:
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disabled—The processor does not classify memory areas.
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enabled—The processor classifies memory areas.
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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. |
Virtualization Technology (VT) set intel-vt-config 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:
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disabled—The processor does not permit virtualization.
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enabled—The processor allows multiple operating systems in independent partitions.
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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. |
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Direct Cache Access set direct-cache-access-config 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:
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disabled—Data from I/O devices is not placed directly into the processor cache.
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enabled—Data from I/O devices is placed directly into the processor cache.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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Processor C State set processor-c-state-config c-state |
Whether the system can enter a power savings mode during idle periods. This can be one of the following:
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disabled—The system remains in high performance state even when idle.
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enabled—The system can reduce power to system components such as the DIMMs and CPUs.
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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. |
Processor C1E set processor-c1e-config 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:
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disabled—The CPU continues to run at its maximum frequency in C1 state.
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enabled—The CPU transitions to its minimum frequency. This option saves the maximum amount of power in C1 state.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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Processor C3 Report set processor-c3-report-config processor-c3-report |
Whether the processor sends the C3 report to the operating system. This can be one of the following:
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disabled—The processor does not send the C3 report.
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acpi-c2—The processor sends the C3 report using the ACPI C2 format.
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acpi-c3—The processor sends the C3 report using the ACPI C3 format.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
On the 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 set processor-c6-report-config processor-c6-report |
Whether the processor sends the C6 report to the operating system. This can be one of the following:
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disabled—The processor does not send the C6 report.
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enabled—The processor sends the C6 report.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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Processor C7 Report set processor-c7-report-config processor-c7-report |
Whether the processor sends the C7 report to the operating system. This can be one of the following:
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disabled—The processor does not send the C7 report.
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enabled—The processor sends the C7 report.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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CPU Performance set cpu-performance-config cpu-performance |
Sets the CPU performance profile for the server. This can be one of the following:
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enterprise—All prefetchers and data reuse are disabled.
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high-throughput—All prefetchers are enabled, and data reuse is disabled.
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hpc—All prefetchers and data reuse are enabled. This setting is also known as high performance computing.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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Max Variable MTRR Setting set max-variable-mtrr-setting-config processor-mtrr |
Allows you to select the number of MTRR variables. This can be one of the following:
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auto-max—The BIOS uses the default value for the processor.
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8—The BIOS uses the number specified for the variable MTRR.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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Package C State Limit set package-c-state-limit-config package-c-state-limit |
The amount of power available to the server components when they are idle. This can be one of the following:
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c0—The server provides all server components with full power at all times. This option maintains the highest level of performance and requires the greatest amount of power.
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c1—When the CPU is idle, the system slightly reduces the power consumption. This option requires less power than C0 and allows the server to return quickly to high performance mode.
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c3—When the CPU is idle, the system reduces the power consumption further than with the C1 option. This requires less power than C1 or C0, but it takes the server slightly longer to return to high performance mode.
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c6—When the CPU is idle, the system reduces the power consumption further than with the C3 option. This option saves more power than C0, C1, or C3, but there may be performance issues until the server returns to full power.
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no-limit—The server may enter any available C state.
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platform-default—The BIOS uses the value for this attribute contained in the BIOS defaults for the server type and vendor.
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