1. Is there any manual about the calculation of power consumption?
Ex. the static power consumption of the build in RAM.
How much the power consumption is different between different RAM usage level.
2. How do you optimize the power consumption when doing a specific software?
For example use a high clock speed with short execution time, or a low clock frequency with a longer execution time?
Using a multi-core(low power) system with a larger area or a single high performance core?
3. how do you evaluate the power consumption?
By testing it in practice or calculation in theory? How could I calculate it?
Arm develops the Energy Awareness Scheduling and Intelligent Power Allocation technologies.
Power consumption and energy diff can be calculated by them via energy model or power model.
see developer.arm.com/.../energy-aware-scheduling