Original Raspberry Pi 3 B /3B+ Plus BCM2837 1.2G Raspberry Pi 3 B+ with 2.4G & 5G WIFI 4.2 Bluetooth and PoE

Raspberry Pi 3 Model B  Single-board computer with wireless LAN and Bluetooth connectivity.
Raspberry Pi 3 Model B+  The final revision of our third-generation single-board computer  faster Ethernet  and Power-over-Ethernet support (with separate PoE HAT).


1.Raspberry Pi 3 Model B is the earliest model of the third-generation Raspberry Pi. It replaced Raspberry Pi 2 Model B in February 2016. 

Quad Core 1.2GHz Broadcom BCM2837 64bit CPU
1GB RAM
BCM43438 wireless LAN and Bluetooth Low Energy (BLE) on board
100 Base Ethernet
40-pin extended GPIO
4 USB 2 ports
4 Pole stereo output and composite video port
Full size HDMI®
CSI camera port for connecting a Raspberry Pi camera
DSI display port for connecting a Raspberry Pi touchscreen display
Micro SD port for loading your operating system and storing data
Upgraded switched Micro USB power source up to 2.5A

2.The Raspberry Pi 3 Model B+ is the final revision in the Raspberry Pi 3 range.

Broadcom BCM2837B0  Cortex-A53 (ARMv8) 64-bit SoC @ 1.4GHz
1GB LPDDR2 SDRAM
2.4GHz and 5GHz IEEE 802.11.b/g/n/ac wireless LAN  Bluetooth 4.2  BLE
Gigabit Ethernet over USB 2.0 (maximum throughput 300 Mbps)
Extended 40-pin GPIO header
Full-size HDMI®
4 USB 2.0 ports
CSI camera port for connecting a Raspberry Pi camera
DSI display port for connecting a Raspberry Pi touchscreen display
4-pole stereo output and composite video port
Micro SD port for loading your operating system and storing data
5V/2.5A DC power input
Power-over-Ethernet (PoE) support (requires separate PoE HAT)