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Intel Turbo Boost
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<p>Intel Turbo Boost is <a href="/facts/Intel/SMF0gJJX">Intel</a>'s trade name for <a href="/facts/Central_processing_unit/Jxp1bqMV">central processing unit's</a> (CPU's) <a href="/facts/Dynamic_frequency_scaling/lIt5XxBU">dynamic frequency scaling</a> feature that automatically raises certain versions of its <a href="/facts/Operating_frequency/w055Woaj">operating frequency</a> when demanding <a href="/facts/Task_(computing)/ghdT0IkM">tasks</a> are running, thus enabling a higher performance. </p><p>The frequency is accelerated when the <a href="/facts/Operating_system/8XTuvMh2">operating system</a> requests the highest <a href="/facts/Performance_state/GnLLzfyr">performance state</a> of the processor. Processor performance states are defined by the <a href="/facts/Advanced_Configuration_and_Power_Interface/GnLLzfyr">Advanced Configuration and Power Interface</a> (ACPI) specification, an <a href="/facts/Open_standard/RGvhGQVI">open standard</a> supported by all major operating systems; no additional software or drivers are required to support the technology. The design concept behind Turbo Boost is commonly referred to as "dynamic <a href="/facts/Overclocking/wNpjgAFI">overclocking</a>". </p><p>When the workload on the processor calls for faster performance, the processor's clock will try to increase the operating frequency in regular increments as required to meet demand. The increased clock rate is limited by the processor's <a href="/facts/Electric_power/w61ID9yQ">power</a>, <a href="/facts/Current_(electricity)/Dc1xdnUX">current</a>, and <a href="/facts/CPU_power_dissipation/nmyJTs0m">thermal</a> limits, the number of cores currently in use, and the maximum frequency of the active cores. </p><p>Turbo Boost is enabled on the <a href="/facts/Intel_Core_i3/WzEJtfJd">Core i3</a>, <a href="/facts/Intel_Core_i5/YYnBYKoR">Core i5</a>, <a href="/facts/Intel_Core_i7/5qT6deUr">Core i7</a>, <a href="/facts/Core_i9/k1CmRVss">Core i9</a> and <a href="/facts/Xeon/j1M8Hp6D">Xeon</a> series of processors manufactured since 2008, more particularly, those based on the <a href="/facts/Nehalem_(microarchitecture)/UPsI457h">Nehalem</a>, and later <a href="/facts/Microarchitecture/NFRd4NUL">microarchitectures</a>. </p>