Arduino Yun

The Arduino Yun is one of the new and more power full devices that have been introduces in the series of Arduino’s. While it has functionality as a standard Arduino Uno, it also has a 400Mhz Atheros AR9331 running a special version of OpenWrt called OpenWrt-Yun. Bellow you will find the full specs: (copied from: https://www.arduino.cc/en/Main/ArduinoBoardYun)

AVR Arduino microcontroller
Microcontroller ATmega32u4
Operating Voltage 5V
Input Voltage 5V
Digital I/O Pins 20
PWM Channels 7
Analog Input Channels 12
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (of which 4 KB used by bootloader)
SRAM 2.5 KB
EEPROM 1 KB
Clock Speed 16 MHz
Linux microprocessor
Processor Atheros AR9331
Architecture MIPS @400MHz
Operating Voltage 3.3V
Ethernet IEEE 802.3 10/100Mbit/s
WiFi IEEE 802.11b/g/n
USB Type-A 2.0 Host
Card Reader Micro-SD only
RAM 64 MB DDR2
Flash Memory 16 MB
PoE compatible 802.3af card support (see the note below)
Length 73 mm
Width 53 mm
Weight 32 g