Turbo Boost: Difference between revisions

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Intel introduced Turbo Boost (previously known as "Intel Dynamic Acceleration") in the [[Nehalem]] processor. It allows active cores to be stepped up beyond their usual operating frequency, using cutoffs such as power draw or thermal dissipation. Turbo Boost operates in 133MHz increments on [[Nehalem]], and 100MHz increments on [[Sandy Bridge]]; the Sandy Bridge implementation also uses a more accurate thermal model. Turbo Boost can be used on more than one core at a time; Sandy Bridge typically allows more aggressive Turbo Boosting when multiple cores are active.
"Activity" is a function of the [[ACPI]] Processor State ("[[Power Management|C State]]") of each core; cores in state C0 (Operating) or C1 (Halt) are considered active.
==Sources==
* "[http://www.intel.com/technology/turboboost/ Intel Turbo Boost Technology] at http://www.intel.com
* "[http://download.intel.com/design/processor/applnots/320354.pdf Intel® Turbo Boost Technology in Intel® Core™ Microarchitecture (Nehalem) Based Processors]", Intel White Paper 320354-001 (November 2008)
[[CATEGORY: x86]]
[[CATEGORY: x86]]
[[CATEGORY: Hardware]]
[[CATEGORY: Hardware]]

Latest revision as of 03:04, 12 January 2011

Intel introduced Turbo Boost (previously known as "Intel Dynamic Acceleration") in the Nehalem processor. It allows active cores to be stepped up beyond their usual operating frequency, using cutoffs such as power draw or thermal dissipation. Turbo Boost operates in 133MHz increments on Nehalem, and 100MHz increments on Sandy Bridge; the Sandy Bridge implementation also uses a more accurate thermal model. Turbo Boost can be used on more than one core at a time; Sandy Bridge typically allows more aggressive Turbo Boosting when multiple cores are active.

"Activity" is a function of the ACPI Processor State ("C State") of each core; cores in state C0 (Operating) or C1 (Halt) are considered active.

Sources