Raspberry Pi 4 Model B

Classic Pi — 1–8 GB RAM variants fixed; microSD or USB boot.

RAM1, 2, 4, or 8 GB — fixed per board silkscreen
StoragemicroSD; USB boot to SSD supported
CPUBroadcom BCM2711 — fixed

Upgrade guides by component

RAM (on-board) Storage upgrades Graphics (integrated) Processor (SoC)

More Raspberry Pi & SBC models

Raspberry Pi 5 Raspberry Pi NVMe storage guide Raspberry Pi 3 Model B+ Raspberry Pi 3 Model B Raspberry Pi 2 Model B Raspberry Pi 1 Model B+ Raspberry Pi Zero 2 W