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6.4 - Appendix C: System Thermal Results
The thermal performance of the FR202 was validated by loading the system to simulate expected
workloads while the test system was exposed to high ambient temperatures in a thermal chamber
environment. The test workload was a 4 core load designed to simulate heavy processing. The
system was run at 100% load for 45 seconds and then the load was removed for a 15 second rest. In
order to profile performance at a variety of thermal conditions, the thermal chamber temperature was
raised from 40°C to 60°C with a 4 hour dwell at each 5° increment. The results were analyzed by
comparing the average clock speed over the duration of the test to the expected base clock speed.
CPU throttling was observed beginning at 50°C, with performance gradually decreasing to just above
the maximum throttle state (600 MHz) at 60°C.
FR202 -
Thermal Testing Graph - The image below shows the thermal test results
4 Core 75% Load
from an FR202 in a thermal chamber with 75% full 4 core workload (45s at 100% followed by 15s rest)
over a temperature range from 40-60°C with a 4 hour dwell every 5°C.
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