743844-015.pdf - 第49页

NOTE Intel ® T urbo Boost T echnology 2.0 may not be available on all SKUs. Intel ® Turbo Boost Technology 2.0 Frequency T o determine the highest performance frequency amongst active processor IA cores, the processor ta…

For more information on the Intel

Turbo Boost Max 3.0 Technology, refer to http://

www.intel.com/content/www/us/en/architecture-and-technology/turbo-boost/turbo-

boost-max-technology.html

NOTE

Intel

Turbo Boost Max 3.0 Technology may not be available on all SKUs.

Power Aware Interrupt Routing (PAIR)

The processor includes enhanced power-performance technology that routes interrupts

to threads or processor IA cores based on their sleep states. As an example, for

energy savings, it routes the interrupt to the active processor IA cores without waking

the deep idle processor IA cores. For performance, it routes the interrupt to the idle

(C1) processor IA cores without interrupting the already heavily loaded processor IA

cores. This enhancement is most beneficial for high-interrupt scenarios like Gigabit

LAN, WLAN peripherals, etc.

Intel

Hyper-Threading Technology

The processor supports Intel

Hyper-Threading Technology (Intel

HT Technology)

that allows an execution processor IA core to function as two logical processors. While

some execution resources such as caches, execution units, and buses are shared,

each logical processor has its own architectural state with its own set of general-

purpose registers and control registers. This feature should be enabled using the BIOS

and requires operating system support.

Intel recommends enabling Intel

Hyper-Threading Technology with Microsoft*

Windows* 7 or newer and disabling Intel

Hyper-Threading Technology using the

BIOS for all previous versions of Windows* operating systems.

NOTE

Intel

HT Technology may not be available on all SKUs.

Intel

Turbo Boost Technology 2.0

The Intel

Turbo Boost Technology 2.0 allows the processor IA core/processor

graphics core to opportunistically and automatically run faster than the processor IA

core base frequency/processor graphics base frequency if it is operating below power,

temperature, and current limits. The Intel

Turbo Boost Technology 2.0 feature is

designed to increase the performance of both multi-threaded and single-threaded

workloads.

Compared with previous generation products, Intel

Turbo Boost Technology 2.0 will

increase the ratio of application power towards Processor Base Power (a.k.a TDP) and

also allows to increase power above Processor Base Power (a.k.a TDP) as high as PL2

for short periods of time. Thus, thermal solutions and platform cooling that are

designed to less than thermal design guidance might experience thermal and

performance issues since more applications will tend to run at the maximum power

limit for significant periods of time.

2.4.6

2.4.7

2.4.8

Intel

Core

™

, Xeon

™

6300 And Xeon

™

E 2400 Processors—Technologies

Generation Intel

Core

™

, Intel

Core

™

Generation, Intel

Core

™

Processor (Series 1) and (Series 2), Intel

Xeon

™

2400 Processor and Intel

Xeon

™

6300 Processor

Datasheet, Volume 1 of 2 May 2025

48 Doc. No.: 743844, Rev.: 015

NOTE

Intel

Turbo Boost Technology 2.0 may not be available on all SKUs.

Intel

Turbo Boost Technology 2.0 Frequency

To determine the highest performance frequency amongst active processor IA cores,

the processor takes the following into consideration:

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

• The estimated processor IA core current consumption and ICCMax settings.

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

limits.

• The package temperature.

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

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

frequency to stay within its Processor Base Power (a.k.a TDP) limit. Turbo processor

frequencies are only active if the operating system is requesting the P0 state. For

more information on P-states and C-states, refer to Power Management on page 62.

Intel

Turbo Boost Technology 2.0 Power Control

Illustration of Intel

Turbo Boost Technology 2.0 power control is shown in the

following sections and figures. Multiple controls operate simultaneously allowing

customization for multiple systems thermal and power limitations. These controls

allow for turbo optimizations within system constraints and are accessible using MSR,

MMIO, and PECI interfaces.

Intel

Turbo Boost Technology 2.0 Power Monitoring

When operating in turbo mode, the processor monitors its own power and adjusts the

processor and graphics frequencies to maintain the average power within limits over a

thermally significant time period. The processor estimates the package power for all

components on the package. In the event that a workload causes the temperature to

exceed program temperature limits, the processor will protect itself using the Adaptive

Thermal Monitor.

Enhanced Intel SpeedStep

Technology

Enhanced Intel SpeedStep

Technology enables OS to control and select P-state. The

following are the key features of Enhanced Intel SpeedStep

Technology:

• Multiple frequencies and voltage points for optimal performance and power

efficiency. These operating points are known as P-states.

• Frequency selection is software controlled by writing to processor MSRs. The

voltage is optimized based on the selected frequency and the number of active

processors IA cores.

— Once the voltage is established, the PLL locks on to the target frequency.

— All active processor IA cores share the same frequency and voltage. In a

multi-core processor, the highest frequency P-state requested among all active

IA cores is selected.

2.4.8.1

2.4.8.2

2.4.8.3

2.4.9

Technologies—Intel

Core

™

, Xeon

™

6300 And Xeon

™

E 2400 Processors

Generation Intel

Core

™

, Intel

Core

™

Generation, Intel

Core

™

Processor (Series 1) and (Series 2), Intel

Xeon

™

2400 Processor and Intel

Xeon

™

6300 Processor

May 2025 Datasheet, Volume 1 of 2

Doc. No.: 743844, Rev.: 015 49

— Software-requested transitions are accepted at any time. If a previous

transition is in progress, the new transition is deferred until the previous

transition is completed.

• The processor controls voltage ramp rates internally to ensure glitch-free

transitions.

NOTE

Because there is low transition latency between P-states, a significant number of

transitions per-second are possible.

Intel

Thermal Velocity Boost (Intel

TVB)

Intel

Thermal Velocity Boost allows the processor IA core to opportunistically and

automatically increase the Intel

Turbo Boost Technology 2.0 frequency speed bins

whenever processor temperature and voltage allows.

The Intel

Thermal Velocity Boost feature is designed to increase performance of both

multi-threaded and singlethreaded workloads.

NOTE

Intel

Thermal Velocity Boost (Intel

TVB) may not be available on all SKUs.

Intel

Speed Shift Technology

Intel

Speed Shift Technology is an energy efficient method of frequency control by

the hardware rather than relying on OS control. OS is aware of available hardware P-

states and requests the desired P-state or it can let the hardware determine the P-

state. The OS request is based on its workload requirements and awareness of

processor capabilities. Processor decision is based on the different system constraints

for example Workload demand, thermal limits while taking into consideration the

minimum and maximum levels and activity window of performance requested by the

Operating System.

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 to 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

2.4.10

2.4.11

2.4.12

Intel

Core

™

, Xeon

™

6300 And Xeon

™

E 2400 Processors—Technologies

Generation Intel

Core

™

, Intel

Core

™

Generation, Intel

Core

™

Processor (Series 1) and (Series 2), Intel

Xeon

™

2400 Processor and Intel

Xeon

™

6300 Processor

Datasheet, Volume 1 of 2 May 2025

50 Doc. No.: 743844, Rev.: 015