Broadcom BCM2835 SoC
700 MHz ARM1176JZF-S core CPU
Broadcom VideoCore IV GPU
512 MB RAM
4 x USB2.0 Ports with up to 1.2A output
Expanded 40-pin GPIO Header
Video/Audio Out via 4-pole 3.5mm connector, HDMI, or Raw LCD (DSI)
10/100 Ethernet (RJ45)
27 x GPIO
SPI bus with two chip selects
Power Requirements: 5V @ 600 mA via MicroUSB or GPIO Header
Supports Debian GNU/Linux, Fedora, Arch Linux, RISC OS and More!
Compared to the Model B it has:
More GPIO. The GPIO header has grown to 40 pins, while retaining the same pinout for the first 26 pins as the Model B.
More USB. We now have 4 USB 2.0 ports, compared to 2 on the Model B, and better hotplug and overcurrent behaviour.
Micro SD. The old friction-fit SD card socket has been replaced with a much nicer push-push micro SD version.
Lower power consumption. By replacing linear regulators with switching ones weve reduced power consumption by between 0.5W and 1W.
Better audio. The audio circuit incorporates a dedicated low-noise power supply.
Neater form factor. Weve aligned the USB connectors with the board edge, moved composite video onto the 3.5mm jack, and added four squarely-placed mounting holes