Intel BX80635E52697V2 Manual Do Utilizador

 

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Intel® Xeon® Processor E5-1600 v2/E5-2600 v2 Product Families 

Datasheet Volume One of Two

Intel Turbo Boost Technology is a feature that allows the processor to opportunistically 

and automatically run faster than its rated operating frequency if it is operating below 

power, temperature, and current limits. The result is increased performance in multi-
threaded and single threaded workloads. It should be enabled in the BIOS for the 

processor to operate with maximum performance.  

The processor’s rated frequency assumes that all execution cores are running an 
application at the thermal design power (TDP). However, under typical operation, not 

all cores are active. Therefore most applications are consuming less than the TDP at the 

rated frequency. To take advantage of the available TDP headroom, the active cores can 
increase their operating frequency.

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

takes the following into consideration:

• The number of cores operating in the C0 state.
• The estimated current consumption.
• The estimated power consumption. 
• The die 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 with its TDP limit.

Intel Turbo Boost Technology is only active if the operating system is requesting the P0 

state. For more information on P-states and C-states refer to 

.

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