The Raspberry Pi 3 Model B improves on the characteristics of its predecessors with a new, faster integrated processor to increase its speed
It also has WiFi and Bluetooth BLE functions to improve its functionality and the ability to power more powerful devices through the USB ports
You can download the firmware at the following link:
Download NOOBS 1.4: #URL: {http://www.raspberrypi.org/downloads/}
Broadcom 1.2 GHz Quad Core BCM2837 64-Bit CPU
1GB RAM
BCM43143 with built-in WiFi and Bluetooth BLE
40-pin extended GPIO
4x USB 2 ports
4-pole stereo output and composite video port
Full-size HDMI
CSI port for connecting a Raspberry Pi camera
DSI display port for connecting a Raspberry Pi touchscreen
Micro SD port for operating system charging and data storage