Intel Turbo Boost Technology |
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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Enhanced Intel Speedstep Technology |
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.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature. |
Intel Hyper-Threading Technology |
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.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature. |
Number of Enabled Cores |
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 n—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.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature. |
Execute Disable |
Classifies memory areas on the server to specify 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.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature. |
Intel Virtualization Technology |
Whether the processor uses Intel Virtualization Technology (VT), 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.
Note |
If you change this option, you must power cycle the server before the setting takes effect. |
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Intel VT for Directed IO |
Whether the processor uses Intel Virtualization Technology for Directed I/O (VT-d). This can be one of the following:
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Disabled—The processor does not use virtualization technology.
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Enabled—The processor uses virtualization technology.
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Intel VT-d Interrupt Remapping |
Whether the processor supports Intel VT-d Interrupt Remapping. This can be one of the following:
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Disabled—The processor does not support remapping.
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Enabled—The processor uses VT-d Interrupt Remapping as required.
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Intel VT-d Coherency Support |
Whether the processor supports Intel VT-d Coherency. This can be one of the following:
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Disabled—The processor does not support coherency.
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Enabled—The processor uses VT-d Coherency as required.
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Intel VT-d Address Translation Services |
Whether the processor supports Intel VT-d Address Translation Services (ATS). This can be one of the following:
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Disabled—The processor does not support ATS.
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Enabled—The processor uses VT-d ATS as required.
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Intel VT-d PassThrough DMA |
Whether the processor supports Intel VT-d Pass-through DMA. This can be one of the following:
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Disabled—The processor does not support pass-through DMA.
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Enabled—The processor uses VT-d Pass-through DMA as required.
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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:
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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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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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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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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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CPU Performance |
Sets the CPU performance profile for the server. The performance profile consists of the following options:
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Data Reuse Optimization
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DCU Streamer Prefetcher
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DCU IP Prefetcher
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Hardware Prefetcher
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Adjacent Cache-Line Prefetch
This can be one of the following:
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Enterprise—Only the DCU IP Prefetcher is enabled. The rest of the options are disabled.
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High Throughput—All options are enabled.
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HPC—Data Reuse Optimization is disabled and all other options are enabled. This setting is also known as high performance computing.
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Custom—All performance profile options can be configured from the BIOS setup on the server. In addition, the Hardware Prefetcher and Adjacent Cache-Line Prefetch options can be configured in the fields below.
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Hardware Prefetcher |
Whether the processor allows the Intel hardware prefetcher to fetch streams of data and instruction from memory into the unified second-level cache when necessary. This can be one of the following:
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Disabled—The hardware prefetcher is not used.
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Enabled—The processor uses the hardware prefetcher when cache issues are detected.
Note |
You must select Custom in the CPU Performance drop-down list in order to specify this value. For any value other than Custom, this option is overridden by the setting in the selected CPU performance profile. |
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Adjacent Cache-Line Prefetch |
Whether the processor uses the Intel Adjacent Cache-Line Prefetch mechanism to fetch data when necessary. This can be one of the following:
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Disabled—The Adjacent Cache-Line Prefetch mechanism is not used.
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Enabled— The Adjacent Cache-Line Prefetch mechanism is used when cache issues are detected.
Note |
You must select Custom in the CPU Performance drop-down list in order to specify this value. For any value other than Custom, this option is overridden by the setting in the selected CPU performance profile. |
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CPU 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. The amount of power reduction is specified in the Package C State Limit field.
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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 state—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 state—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 state—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 state—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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C7 state—When the CPU is idle, the server makes a minimal amount of power available to the components. This option saves the maximum amount of power but it also requires the longest time for the server to return to high performance mode.
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No Limit—The server may enter any available C state.
Note |
This option is used only if CPU C State is enabled. |
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C1E |
Whether the CPU transitions to its minimum frequency when entering the C1 state. 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.
Note |
This option is used only if CPU C State is enabled. |
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