The differences between the boards are related to a lot of things like, different architectures, components, OS and other resources.
For example take a look at this website: Raspberry Pi, Beaglebone Black, Intel Edison – Benchmarked.
Hi, thanks for your answer , this benchmark is very interesting. You know , how i can install sysbench in my intel edison ? i want to be this test too.
Sysbench will not show you power consumption. To do that, you need to measure the voltage and current going into your Edison, or use a power meter.
The graphs in the blog article were done with sysbench, but the power measurements mentioned in the comments were done with a multimeter.