Raspberry PI 2

Raspberry pi 2 Model B
Features
6X faster - this is faster game, faster calculation and faster programming.
It has a new generation ARMv7 quad-core processor.
It has more memory - 1GB RAM and 512MB (already doubled!) - which means you can run more applications simultaneously without slowing down the processing speed!
Backwards compatible with most Raspberry Pi Model B + projects.
4 USB ports
40 GPIO pins
Full HDMI port
Ethernet port
Combination of 3.5mm audio jack and composite video
Camera Interface (CSI)
Display Interface (DSI)
Micro SD card slot
VideoCore IV 3D graphics core