Would be also interesting to compare power consumption. Different microSD cards can range from 0.06 to 1.34+ mA in idle, which can be more than a microcontrolle

Would be also interesting to compare power consumption. Different microSD cards can range from 0.06 to 1.34+ mA in idle, which can be more than a microcontroller like ARM M4: https://electronics.stackexchange.com/a/123386 https://electronics.stackexchange.com/a/123386