Hardware Specification

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The RPi is available in two models. Model A and Model B. They are very similar but the cheaper Model A does not include a network port and only provides one USB port.

The Model A was expected to be used more widely in schools due to its lower cost but the lower power consumption may also make it ideal for other projects.

The table below shows the hardware specification of both models :

Model A Model B
Raspberry Pi Model A Model B
Price US$25 (GBP £20) US$35 (GBP £28)
System (SoC) Broadcom BCM2835 (CPU + GPU + SDRAM)
CPU 700 MHz ARM11 ARM1176JZF-S core
GPU Broadcom VideoCore IV, OpenGL ES 2.0,
OpenVG 1080p30 H.264 high-profile encode/decode
Memory 256 MB 512 MB
USB 2.0 ports 1 2
Video outputs Composite video, Composite RCA, HDMI
Audio outputs 3.5 mm jack, HDMI Audio
Audio inputs None
Storage SD/SDHC card slot
Network None 10/100 Ethernet RJ45
Low-level peripherals General Purpose Input/Output (GPIO) pins, Serial Peripheral Interface Bus (SPI), I²C, I²S, Universal asynchronous receiver/transmitter (UART)
Real-time clock None
Power ratings 500mA, (2.5 Watt) 700mA, (3.5 Watt)
Power source 5V via Micro USB connector
Size 85mm x 56mm (more mechanical details here)

The Model B originally shipped with 256MB but this was upgraded so all Model Bs now come with 512MB.

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