The Raspberry Pi 2 Model B is the second-generation Raspberry Pi. It replaced the original Raspberry Pi 1 Model B+ in February 2015.
Please note: The processor has completely changed on the new RaspberryPi 2 v1.2, instead of an ARM v6 core chip (arm6l) or ARM v7, the BCM2836 has been upgraded to a BCM2837 (ARM Cortex-A53) core.
Compared to the Raspberry Pi 1 it has:
Like the (Pi 1) Model B+, it also has: