Not only is the Raspberry Pi 3 Model B the fastest Raspberry Pi to date, it's the first one with built-in WiFi (802.11B/G/N) and Bluetooth Low Energy1 connectivity allowing you to get connected right out of the box. The Pi 3 is powered by an all-new BCM2837 1.2GHz Quad-Core ARMv8 64bit2 processor that is noticeably quicker and more usable than previous generations. Webpages render faster and programs are much more snappy, making the experience feel like a modern machine. Other upgrades include improved power management which allow the Pi 3 to power hungry USB gadgets like hard drives and cameras. Of course, this increased capacity means that you'll need a power supply that's up to the task. We recommend a 5V USB power supply capable of putting out at least 2.4A.

Upgrades above aside, the rest of the Pi 3 is very similar to previous generations. RAM stays the same at 1GB, Ethernet is 10/100 and the GPU is the same tried-and-true VideoCore IV. As for physical changes, the Pi 3 keeps the same footprint, mounting holes, and all port types and locations as previous versions. The only physical difference is the addition of a ceramic WiFi / BLE antenna and the location of the status LEDs (which have switched sides.) All cases that worked for the Pi B+ and Pi 2 are compatible (although you may want to drill new holes to see the status LEDs.)

Processor: 1.2GHz Quad Core BCM2837 ARMv8 64bit Processor
Connectivity: Built-in WiFi (802.11B/G/N) and Bluetooth Low Energy (BLE)
RAM: 1GB
GPU: VideoCore IV
USB: 4 x USB 2.0 ports
Ethernet: 10/100 Ethernet Port
Video Output: Full-Size HDMI and Composite
Sound: L/R Stereo Line-out
Digital Interfaces: 1 x CSI Camera Port and 1 x DSI Display Port
GPIO: 40 General Purpose Input / Output Pins

1.2GHz Quad Core BCM2837 ARMv8 64bit Processor
Full-Size HDMI and Composite 4 x USB 2.0 ports
Built-in WiFi (802.11B/G/N) and Bluetooth Low Energy (BLE)
5.25VDC 2.4A Regulated AC Power Adapter - 48" Cord with Micro USB Plug

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Raspberry Pi 3 Model B 1GB Project Board w 2.4A Power Supply