Enabling this option allows the processor cores to automatically increase their frequency if they are running below power and temperature, thereby increasing performance. By default, this option is enabled.
Enabling this option allows processor resources to be used more efficiently, enabling multiple threads to run on each core and increasing processor throughput, improving overall performance on threaded software.
This option specifies the number of logical processor cores that can run on the server. This option sets he state of logical processor cores in a package. If you disable this setting, Hyper Threading is also disabled.
This option allows the user 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 option uses the value for this attribute contained in the BIOS defaults for the server type and vendor. By default this BIOS option is enabled.
This BIOS option configures the processor last level cache (LLC) prefetch feature as a result of the non-inclusive cache architecture. The LLC prefetcher exists on top of other prefetchers that can prefetch data into the core data cache unit (DCU) and mid-level cache (MLC). In some cases, setting this option to disabled can improve performance. Values for this BIOS option can be: Disabled: Disables the LLC prefetcher. The other core prefetchers are unaffected. Enabled: Gives the core prefetcher the ability to prefetch data directly to the LLC. By default, LLC prefetch option is disabled.
This BIOS option controls the DIMM power savings mode policy. Setting this BIOS option in Disabled, DIMMs do not enter power saving mode. Setting this BIOS option in Slow, DIMMs can enter power saving mode, but the requirements are higher. Therefore, DIMMs enter power saving mode less frequently. Setting this BIOS option in Fast, DIMMs enter power saving mode as often as possible. Setting this BIOS option in Auto, BIOS controls when a DIMM enters power saving mode based on the DIMM configuration.
This BIOS option is memory RAS feature which runs a background memory scrub against all DIMMs and it can negatively impact performance. By default, this option is enabled. Disabling this option, improves performance.
This BIOS option provides similar localization benefits as cluster-on-die (COD), without some of COD's downsides. SNC breaks up the LLC into two disjoint clusters based on address range, with each cluster bound to a subset of the memory controllers in the system. SNC improves average latency to the LLC (last level cache) and memory. SNC is a replacement for the COD feature found in previous processor families. For a multi-socketed system, all SNC clusters are mapped to unique NUMA domains. IMC Interleaving must be set to the correct value to correspond with SNC enable/disable. Values for this BIOS option can be: Disabled: The LLC is treated as one cluster when this option is disabled Enabled: Utilizes LLC capacity more efficiently and reduces latency due to core/IMC proximity. This may provide performance improvement on NUMA-aware operating systems By default this BIOS option set to Disabled.
This BIOS option controls the interleaving between the Integrated Memory Controllers (IMCs). If SNC is disabled, IMC Interleaving should be set to 2-way. If SNC is enabled, IMC Interleaving should be set to 1-way. 2-Way: If IMC Interleaving is set to 2-way, addresses will be interleaved between the two IMCs. 1-Way: If IMC Interleaving is set to 1-way, there will be no interleaving.