The Raspberry Pi 4 Model B features a quad-core Cortex-A72 running at 1.5GHz, up to 8GB of LPDDR4 memory, real Gigabit Ethernet, USB 3.0, and dual 4K display output. This puts it in a different class from every Pi that came before it.

Runs OctoPrint or Klipper, webcam stream and all. It also makes a capable Linux desktop, a home server, a media center, a retro gaming console, a network-wide ad blocker, or the brain of whatever you are building. The 40-pin GPIO header is unchanged from earlier models, so the HATs and accessories you already own still fit.

Specifications

• Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
• 1GB, 2GB, 4GB or 8GB LPDDR4-3200 SDRAM (depending on model)
• 2.4 GHz and 5.0 GHz IEEE 802.11ac wireless, Bluetooth 5.0, BLE
• Gigabit Ethernet
• 2 × USB 3.0 ports, 2 × USB 2.0 ports
• Raspberry Pi standard 40-pin GPIO header (fully backwards compatible)
• 2 × micro-HDMI ports, supporting up to 4Kp60
• 2-lane MIPI DSI display port
• 2-lane MIPI CSI camera port
• 4-pole stereo audio and composite video port
• H.265 decode at 4Kp60, H.264 decode at 1080p60 and encode at 1080p30
• OpenGL ES 3.1, Vulkan 1.0
• microSD card slot for the operating system and storage
• 5V DC via USB-C connector, 3A minimum
• 5V DC via GPIO header, 3A minimum
• Power over Ethernet enabled (requires the separate PoE HAT)
• Operating temperature: 0 to 50°C ambient

Product Notes

Power comes in over USB-C and it wants a proper 5V/3A supply. A phone charger you had lying around will usually boot it, but it will brown out the moment you plug in a hard drive. Use a supply rated for the job.

Video output is micro-HDMI, not full-size and not mini. If you are coming from a Pi 3 your old cable will not fit. You need one micro-HDMI cable per display.

You will also need a microSD card, 16GB or larger, and something to write the OS onto it. Raspberry Pi OS is free and the imaging tool takes about five minutes.

The Pi 4 runs warmer than earlier models, particularly the 8GB version under sustained load. It will not damage itself, it just throttles back. A heatsink or a case with a small fan keeps it at full clock.