KBox C-103-CFL-x - User Guide, Rev. 1.0
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The maximum system ambient temperature depends mostly on the power consumption of
the processor, chipset and third party components:
Configurations with HDDs are limited to 50°C maximum ambient temperature.
Configurations with wireless components (LTE, WiFi) are limited to 60°C ambient
temperature.
For the temperature evaluation a specialized tool from Intel
®
was used to set the processor to a defined workload.
Depending on the power consumption one or more cores were set to 70% workload. This includes the graphics core.
The tool also handles the usage of the "Turbo Mode" of certain processor types.
The processor utilization depends highly on the software used. Software using multicore
feature will run on several cores whereas standard software will only utilise one core. In
this case the processor will use the "Turbo Mode" to increase the clock for the core with the
highest workload, as long as the temperature is within limits.
7.6.
Third Party Components
When the KBox C-103-CFL is extended and configured with third party components like PCIe extension cards and
drives (HDD or SSD), it has to be taken into account that the air temperature inside the system is higher than the
ambient temperature. An approximately internal temperature rise is given.
7.7.
Processor Thermal Monitoring
The processor used with the KBox C-103-CFL system provides internal thermal monitoring. Every core of the
processor comprises a temperature sensor.
To allow an optimal operation and long-term reliability, the processor must operate in the specified temperature
range. To avoid overheating the processor performs an automatic thermal management, which intends to keep the
processor temperature below the highest value of the temperature range. This behavior is a CPU standard feature.
7.8.
Processor Thermal Trip Feature
The Processor Thermal Trip feature protects the processor from catastrophic overheating. The Thermal Trip Tensor
threshold is set well above the normal operating temperature to ensure that there are no false trips. The processor
will stop all executions when the junction temperature exceeds approximately 125°C. This event will be indicated by
the red blinking "Thermal" LED on the front panel. This behavior cannot be altered. Once activated, the event remains
latched until power is cycled. f
