Intel® Turbo Boost technology, a core in C6 is considered an inactive core.Ĭ7 - New, slightly deeper sleep state introduced with Sandy Bridge and later.īe warned that C6 and C7 states are "deep" sleep modes and may have some latency penalties that might not be great for certain types of server workloads. Power Gates are used to reduce power consumption to close to zero. For Intel® Turbo Boost technology, a core in C3 is considered an inactive core.Ĭ6 - While in C6, the core PLLs are turned off, the core caches are flushed and the core state is saved to the Last Level Cache. For Intel® Turbo Boost technology, a core in C1 is considered an active core.Ĭ3 - While in C3 the core PLLs are turned off, and all the core caches are flushed. While in C1, no instructions are being executed. Intel® Turbo Boost technology, a core in C0 is considered an active core.Ĭ1 - halt state. While in C0, instructions are being executed by the core. If it is working, you will see the current frequency change as you add load to the CPUs, due to the multiplier increasing dynamically under load. I7z is a good tool for monitoring Intel Turbo Boost for Intel CPUs that support it (i7 and later) on Linux.
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