How it works: Intel Turbo Boost Technology
22.12.10
Основы основ
To put it very simply, Turbo Boost is the ability to increase the frequency of one or more actively used processor cores at the expense of the rest that are currently not in use. Unlike banal overclocking (for example, by changing the frequency multiplier in the BIOS), Turbo Boost is an intelligent technology.
Firstly, the increase in frequency occurs depending on the current load of the computer and the nature of the tasks being performed. For example, for fast operation of single-threaded applications, it is important to speed up one core as much as possible (others are still idle). For multi-threaded tasks, you will need to “boost” several cores.
Secondly, unlike the same overclocking, Turbo Boost remembers the limitations of power, temperature and current as part of the design power (TDP, thermal design power). In other words, overclocking using Turbo Boost does not go beyond the normal operating conditions of the processor (all these indicators are constantly measured and analyzed), does not threaten overheating and, therefore, does not require additional cooling.
System Turbo Boost time varies depending on workload, operating conditions, and platform design.
The subtleties of overclocking
Let’s immediately make a reservation that frequency changes using Turbo Boost technology occur discretely. The minimum unit for increasing or decreasing the frequency of one or more active cores is a step, the value of which is 133.33 MHz. Please note that the frequency for all active cores changes simultaneously and always by the same number of steps.
Let’s look at how Turbo Boost technology works using the following example.
Currently, a quad-core processor has two cores active and their frequency needs to be increased. The system increases the frequency of each of them by one step (+133.33 MHz) and checks the current, power consumption and temperature of the processor. If the indicators are within the TDP, the system tries to increase the frequency of each of the active cores one more step until it reaches the set limit.
If increasing the frequency of each of the two active cores by one more step (+133.33 MHz) leads the system to exceed the standard thermal package (TDP), the system automatically lowers the frequency of each core by one step (-133.33 MHz) , to return normal condition. As mentioned above, you cannot change the frequency of active cores individually. That is, in principle, it is not possible for the frequency of one active core to change by one step, and the frequency of another – by two steps.
Turbo Boost technology is supported by desktop and mobile Intel Core i5/i7 processors, but different models may have different operating modes. For example, the following operating modes exist for Intel Core i5 600 series and Core i7 900 series for mobile and desktop processors, as well as Core i7 Extreme Edition.
So for one active core it is possible to increase the frequency by one or two steps (133.33 and 266.66 MHz, respectively). 
For two, three or four active cores, it is possible to increase the frequency by one step.
For two, three or four active cores, it is possible to increase the frequency by one step.In addition, Intel Core i7-980x Extreme Edition processors can increase the frequency by one step for five or six active cores at once, and by two steps for two simultaneously active cores.
For Intel Core i7 800 series and Intel Core i5 700 series processors, the situation is as follows:
Источник: www.intel.com/support/ru/processors/sb/cs-029908.htm
Full automatic
Intel Turbo Boost Technology is usually enabled by default in one of the BIOS menus, where you can turn it on or off. Other than using the BIOS menu, there is no way for the user to change how Intel Turbo Boost Technology works through hardware or operating system settings. When Intel Turbo Boost Technology is enabled, it runs automatically under the operating system.
You can check if Turbo Boost is running on your system using the Intel Turbo Boost Technology Monitor utility. If you disable all cores except one in the BIOS settings, you can see the maximum frequency of the active core when using Turbo Boost technology.
Conclusions
Even a simple analysis of the table of maximum frequencies in different operating modes, not to mention practical tests, allows us to understand that Turbo Boost technology gives the greatest increase in single-threaded applications (when it is possible to overclock one core by several steps at once). In applications that are well optimized for multithreading, the performance gain will not be as large.
It is important to note that there are fewer and fewer single-threaded programs among resource-intensive applications. In practice, this means that existing Turbo Boost technology will have less and less effect over time. On the other hand, the potential of multi-core processors will be more fully realized, as more and more applications will appear that can fully load multiple cores.
On the other hand, the potential of multi-core processors will be more fully realized, as more and more applications will appear that can fully load multiple cores.
Don't miss interesting news
Subscribe to our channels and read announcements of high-tech news, tes
Читайте також 
Intel introduced Core Ultra vPro laptop and Raptor Lake Refresh vPro desktop processors for business
Articles & tests
25.11.24
Samsung Galaxy Tab S10 Ultra (SM-X926B) tablet: many
0
Samsung Galaxy Tab S10 Ultra (SM-X926B) tablet: many
73
0 
The new Samsung Galaxy Tab S10 Ultra tablet has a large 14.6” screen, a top-of-the-line Mediatek Dimensity 9300 processor, and an S Pen stylus. Let’s try to figure out what this device is for.
News
26.11.24 | 18.05
Nubia Watch GT smartwatch with AMOLED display has up to 15 days of battery life smart watches
Nubia Watch GT smartwatch with AMOLED display has up to 15 days of battery life smart watches
The Nubia Watch GT supports over 100 sports modes and is equipped with dual-frequency GPS navigation for more accurate route tracking.
26.11.24 | 16.10
ChatGPT developers will release their browser to compete with Google Chrome artificial intelligence browser development
ChatGPT developers will release their browser to compete with Google Chrome artificial intelligence browser development
OpenAI continues to develop its technologies, strengthening its position in the artificial intelligence market and striving to compete with giants like Google.