Datasheet
57
Thermal Management
Table 5-19.35 W Standard Voltage (SV) Processor Idle Power
5.1.4
Intelligent Power Sharing Control Overview
Based upon knowledge of the processor core and integrated graphics and memory
controller thermal power, performance state, and temperature, power sharing control
does the following:
•
Utilizes internal graphics controller dynamic frequency performance states to
achieve their highest performance within the rated thermal power envelope. Intel
Dynamic Frequency enabled processors will offer a range of upside performance
capability beyond their rated or guaranteed frequency.
•
Controls the processor core and internal graphics controller Intel Turbo Boost
performance states to ensure that overall MCP thermal power consumption does
not exceed the specified MCP thermal power limit.
•
Limits MCP component usage to ensure that each of the components' T
j,max
value is
not exceeded.
It is possible that the thermal influence between the MCP components could potentially
cause a component to reach its T
j,max
, invoking undesirable component hardware auto-
throttling. It is expected that when running the TDP workload, power sharing control
may limit the entire range of component Intel Turbo Boost capabilities (effectively,
disabling them).
The principal component of the power sharing control architecture is the policy
manager within the Intel Turbo Boost Technology driver which:
•
Communicates with the graphics software driver to limit, or increase, internal
graphics thermal power.
•
Communicates with the processor core via the PCH to processor core PECI interface
to limit, or increase, processor core thermal power.
The Intel Turbo Boost Technology policy manager will set a thermal power limit to
which the graphics driver and processor core will adjust their Intel Turbo Boost
Technology performance dynamically, to stay within the limit.
Note:
The processor PECI pin must be connected to the PCH PECI pin in order for Intel Turbo
Boost Technology to properly function.
Symbol
Parameter
Min
Typ
Max
T
j
P
C1E
Idle power in the Package C1e state
-
-
16 W
50 ºC
P
C3
Idle power in the Package C3 state
-
-
7.5 W
35 ºC
