Copyright
©
2017
congatec
AG
TCKLm10
38/71
When activated, the TCC causes both processor core and graphics core to reduce frequency and voltage adaptively. The Adaptive Thermal
Monitor will remain active as long as the package temperature remains at its specified limit. Therefore, the Adaptive Thermal Monitor will
continue to reduce the package frequency and voltage until the TCC is de-activated. Clock modulation is activated if frequency and voltage
adjustments are insufficient. Additional hardware, software drivers, or operating system support is not required.
Note
The maximum operating temperature for Intel
®
Xeon, Core™ i7/i5/i3 and Celeron
®
processors is 100°C.
To ensure that the TCC is active for only short periods of time, thus reducing the impact on processor performance to a minimum, it is
necessary to have a properly designed thermal solution. The Intel
®
Xeon, Core™ i7/i5/i3 and Celeron
®
processor’s respective datasheet can
provide you with more information about this subject.
Intel
®
’s Core™ i7/i5/i3 and Celeron
®
processors use the THERMTRIP# signal to shut down the system if the processor’s silicon reaches a
temperature of approximately 125°C. The THERMTRIP# signal activation is completely independent from processor activitiy and therefore
does not produce any bus cycles.
Note
In order for THERMTRIP# to be able to automatically switch off the system, it is necessary to use an ATX style power supply.
7.2.3
Processor Performance Control
Intel
®
processors found on the conga-TC175 run at different voltage/frequency states (performance states) referred to as Enhanced Intel
®
SpeedStep
®
technology (EIST). Operating systems that support performance control take advantage of microprocessors that use several
different performance states in order to efficiently operate the processor when it’s not being fully used. The operating system will determine
the necessary performance state that the processor should run at so that the optimal balance between performance and power consumption
can be achieved during runtime.
The Windows family of operating systems links its processor performance control policy to the power scheme setting. You must ensure that the
power scheme setting you choose has the ability to support Enhanced Intel
®
SpeedStep
®
technology.
Intel Speed Shift is a new and energy efficient method for frequency control featured in the 7th Generation
Intel
®
Core™
processor family. This
feature is also referred to as Hardware-controlled Performance States (HWP). It is a hardware implementation of the ACPI defined Collaborative
Processor Performance Control (CPPC2) and is supported by newer operating systems (Win 8.1 or newer).
With this feature enabled, the processor autonomously selects performance states based on workload demand and thermal limits while also
considering information provided by the OS; for example, the performance limits and workload history.
