3 boards

Arduino

Arduino Mega 2560

ATmega2560 · AVR

Clock16 MHz
Flash256 KB
RAM8 KB
MCU Dev Board

Arduino

Arduino Nano

ATmega328P · AVR

Clock16 MHz
Flash32 KB
RAM2 KB
MCU Dev Board

Arduino

Arduino Uno R3

ATmega328P · AVR

Clock16 MHz
Flash32 KB
RAM2 KB
MCU Dev Board

All 3 boards shown