This is a beast compared to the old Diecimila, well I’ll let the specs speak for themself. Diecimila specs in parentheses.

Arduino Mega specifications:

Microcontroller: ATmega1280 (ATmega168)
Operating Voltage: 5V
Input Voltage (recommended): 7-12V
Input Voltage (limits) : 6-20V
Digital I/O Pins: 54, of which 14 provide PWM output (14, of which 6 provide PWM output)
Analog Input Pins: 16
DC Current per I/O Pin: 40 mA
DC Current for 3.3V Pin: 50 mA
Flash Memory: 128 KB of which 4 KB used by bootloader (16 KB (of which 2 KB used by bootloader)
SRAM 8 KB: (1 KB)
EEPROM 4 KB (512 bytes)
Clock Speed 16 MHz

Yepp, pretty much outclasses the old arduino 😀