Available Models
Pi 4 Model B — 1GB
Entry-level · ~$35 · Launched 2019
Pi 4 Model B — 2GB
Mid-range · ~$45 · Most affordable with headroom
Pi 4 Model B — 4GB
Popular · ~$55 · Sweet spot for most use cases
Pi 4 Model B — 8GB
High-end · ~$75 · Launched 2020
Pi 400
Keyboard form factor · ~$70 with PSU + SD
Compute Module 4
Industrial / embedded · Various configs
Technical Specifications (Model B)
| Component | Specification |
|---|---|
| SoC | Broadcom BCM2711 (28nm) |
| CPU | Arm Cortex-A72 × 4 @ 1.8GHz (up to, with overclock) |
| GPU | VideoCore VI @ 500MHz |
| RAM | 1GB / 2GB / 4GB / 8GB LPDDR4 (3200MHz) |
| Storage | microSD (bootable via USB 3.0 also) |
| USB | 2× USB 3.0 + 2× USB 2.0 |
| Display | 2× micro-HDMI (4K @ 30fps, or 1080p @ 60fps each) |
| Ethernet | True Gigabit Ethernet (no USB overhead) |
| Wireless | 802.11ac Wi-Fi 5 (2.4GHz + 5GHz), Bluetooth 5.0, BLE |
| GPIO | 40-pin header |
| Camera / DSI | 1× CSI camera + 1× DSI display |
| PCIe | None (available on Compute Module 4) |
| Power | USB-C, 5V/3A (15W) recommended |
| Dimensions | 85mm × 56mm |
| H.265 Decode | 4Kp60 hardware decode |
Key Improvements Over Pi 3
📡 True Gigabit Ethernet — Pi 3 shared USB bandwidth with its Ethernet. Pi 4 gets a dedicated Gigabit controller — real network performance.
💾 USB 3.0 — first Pi with USB 3.0 ports, enabling fast SSD boot speeds and external storage performance.
🖥️ Dual 4K display — two micro-HDMI outputs, each capable of 4K output simultaneously.
🔌 USB-C power — more modern power delivery (though early batch had a USB-C detection bug).
Interactive Comparison
Compare any two Raspberry Pi models side-by-side across all generations.