The Model B+ is the final revision of the original Raspberry Pi. ... The Raspberry Pi 3 Model B+ was launched in March 2018. It uses a 1.4GHz 64-bit quad-core Arm Cortex-A53 CPU, has 1GB RAM, gigabit Ethernet, integrated 802.11ac/n wireless LAN, and Bluetooth 4.2. The Raspberry Pi 4 Model B was launched in June 2019.