The Raspberry Pi 3 has included integrated 802.11 b/g/n wireless LAN, Bluetooth Classical and LE. You
didn't need additional peripherals to make it wireless. It is 10x the performance of Raspberry Pi 1.
What's more, it has complete compatibility with Raspberry Pi 2, which means almost all the previous
Raspberry Pi 2 accessories are compatible with Raspberry Pi 3.
The Raspberry Pi 3 is the third generation Raspberry Pi. It replaced the Raspberry Pi 2 Model B in
Compared to the Raspberry Pi 2 it has: A 1.2GHz 64-bit quad-core ARMv8 CPU 802.11n Wireless LAN Bluetooth 4.0 Bluetooth Low Energy (BLE)
Like the Pi 2, it also has: 4 USB ports 40 GPIO pins Full HDMI port Ethernet port Combined 3.5mm audio jack and composite video Camera interface (CSI) Display interface (DSI) Micro SD card slot (now push-pull rather than push-push) VideoCore IV 3D graphics core