The Raspberry Pi 2 has:

• A 900MHz quad-core ARM Cortex-A7 CPU
• 1GB RAM

This model B, also has:

• 100 Base Ethernet
• 4 USB ports
• 40 GPIO pins
• Full HDMI® port
• Combined 3.5mm audio jack and composite video
• Camera interface (CSI)
• Display interface (DSI)
• Micro SD card slot
• VideoCore IV 3D graphics core