Raspberry is a mini PC;

Overview:

As a New-on product， Raspberry Pi 3 Model B has newly 64-bit quad-core and internal WI-FI and Bluetooth.

Built on the latest Broadcom 2837 64 Bit processor， the new generation Raspberry Pi 3 Model B is ten times faster and more powerful than its predecessors.

What' s the difference between Raspberry Pi 3 Model B and Raspberry Pi 2?

Processor Chipset. Raspberry Pi 3 Model B is Broadcom BCM2837 64Bit Quad Core Processor powered Single Board Computer while Raspberry Pi 2 is Broadcom BCM2836 32Bit Quad Core Processor powered Single Board Computer .
Processor Speed. The CPU on the Raspberry Pi 3B is one and a half times faster than Raspberry Pi 2， which means the board performs better.
Max electric current/voltage: 2.5A 5V， which means that power supplies for previous Pi boards will not be sufficient. You need to change another one Official Power Supply
On-board connectivity. The Pi 3 features 802.11 b/g/n Wireless LAN and Bluetooth Classic & Low Energy (BLE)
New components. The Pi 3 features a chip antenna where status LEDs were located previously. The status LEDs are still on the board， right next to the microSD card slot.

Features:

Broadcom BCM2387 chipset
Built in WIFi and Bluetooth
64-bit CPU
IoT Ready
802.11 bgn Wireless LAN and Bluetooth 4.1 (Bluetooth Classic and LE)
1.2GHz Quad-Core ARM Cortex-A53
4 pole Stereo output and Composite video port
4 x USB ports
10/100 Ethernet port
DSI display port for connecting the Raspberry Pi touch screen display
Micro SD port for loading your operating system and storing data