Technologies

3.5Enhanced Intel SpeedStep® Technology

The processor supports Enhanced Intel SpeedStep® Technology as an advanced means of enabling very high performance while also meeting the power-conservation needs of the platform.

Enhanced Intel SpeedStep Technology builds upon that architecture using design strategies that include the following:

Separation between Voltage and Frequency Changes. By stepping voltage up and down in small increments separately from frequency changes, the processor is able to reduce periods of system unavailability (which occur during frequency change). Thus, the system is able to transition between voltage and frequency states more often, providing improved power/performance balance.

Clock Partitioning and Recovery. The bus clock continues running during state transition, even when the core clock and Phase-Locked Loop are stopped, which allows logic to remain active. The core clock is also able to restart more quickly under Enhanced Intel SpeedStep Technology.

For additional information on Enhanced Intel SpeedStep Technology see Section 4.2.1.

3.6Intel® Intelligent Power Technology

Intel® Intelligent Power Technology conserves power while delivering advanced power- management capabilities at the rack, group, and data center level. Providing the highest system-level performance per watt with “Automated Low Power States” and “Integrated Power Gates”. Improvements to this processor generation are:

Intel Network Power Management Technology

Intel Power Tuning Technology

For more information on Intel Intelligent Power Technology, see this link http:// www.intel.com/technology/intelligentpower/.

3.7Intel® Advanced Vector Extensions (Intel® AVX)

Intel® Advanced Vector Extensions (Intel® AVX) is a new 256-bit vector SIMD extension of Intel Architecture. The introduction of Intel AVX starts with the 2nd Generation Intel(r) Core(TM) Processor Family. Intel AVX accelerates the trend of parallel computation in general purpose applications like image, video, and audio processing, engineering applications such as 3D modeling and analysis, scientific simulation, and financial analysts.

Intel AVX is a comprehensive ISA extension of the Intel® 64 Architecture. The main elements of Intel AVX are:

Support for wider vector data (up to 256-bit) for floating-point computation.

Efficient instruction encoding scheme that supports 3 operand syntax and headroom for future extensions.

Flexibility in programming environment, ranging from branch handling to relaxed memory alignment requirements.

New data manipulation and arithmetic compute primitives, including broadcast, permute, fused-multiply-add, and so forth.

84

Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families

 

Datasheet Volume One

Page 84
Image 84
Intel CM8062101038606, E5-4600, E5-2600, E5-1600 Enhanced Intel SpeedStep Technology, Intel Intelligent Power Technology