Data Sheet

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Technologies

64 Datasheet, Volume 1 of 2

• The number of processor IA cores operating in the C0 state.

• The estimated processor IA core current consumption and I

CCMax

• The estimated package prior and present power consumption and turbo power

limits.

• The package temperature.

• Sustained turbo residencies at high voltages and temperature.

Any of these factors can affect the maximum frequency for a given workload. If the

power, current, Voltage or thermal limit is reached, the processor will automatically

reduce the frequency to stay within the PL1 value. Turbo processor frequencies are only

active if the operating system is requesting the P0 state. If turbo frequencies are

limited the cause is logged in IA_PERF_LIMIT_REASONS register. For more information

on P-states and C-states, Refer Power Management.

3.3.3 Intel

Thermal Velocity Boost (TVB)

Intel

Thermal Velocity Boost allows the processor IA core to opportunistically and

automatically increase the Intel

Turbo Boost Technology 2.0 frequency by up to two

speed bins whenever processor temperature allows. The Intel

Thermal Velocity Boost

feature is designed to increase performance of both multi-threaded and single-

threaded workloads.

Note: Intel

Thermal Velocity Boost (TVB) is enabled only on 8th Gen Intel

Core™ Processor

i9 and mobile Xeon Top-bin SKUs.

3.3.4 Intel

Advanced Vector Extensions 2 (Intel

AVX2)

Intel

Advanced Vector Extensions 2.0 (Intel

AVX2) is the latest expansion of the

Intel instruction set. Intel AVX2 extends the Intel Advanced Vector Extensions (Intel

AVX) with 256-bit integer instructions, floating-point fused multiply add (FMA)

instructions, and gather operations. The 256-bit integer vectors benefit math, codec,

image, and digital signal processing software. FMA improves performance in face

detection, professional imaging, and high performance computing. Gather operations

increase vectorization opportunities for many applications. In addition to the vector

extensions, this generation of Intel processors adds new bit manipulation instructions

useful in compression, encryption, and general purpose software.

For more information on Intel AVX, Refer http://www.intel.com/software/avx

Intel Advanced Vector Extensions (Intel AVX) are designed to achieve higher

throughput to certain integer and floating point operation. Due to varying processor

power characteristics, utilizing AVX instructions may cause a) parts to operate below

the base frequency b) some parts with Intel

Turbo Boost Technology 2.0 to not achieve

any or maximum turbo frequencies. Performance varies depending on hardware,

software and system configuration and you should consult your system manufacturer

for more information. Intel

Advanced Vector Extensions refers to Intel AVX, Intel AVX2

or Intel AVX-512.

For more information on Intel AVX, Refer http://www-ssl.intel.com/content/www/us/

en/architecture-and-technology/turbo-boost/turbo-boost-technology.html

Note: Intel AVX2 Technology may not be available on all SKUs.