From Data Crystal

[edit] Technical Specs

CPU

8-bit Z80 work-alike at 4.194304MHz

RAM

8kB internal

ROM

256kBit, 512kBit, 1MBit, 2MBit and 4MBit and 8MBit cartridges are known (32kB, 64kB, 128kB, 256kB and 512kB 1024kB).

VRAM

8kB internal

Sound

4 channel stereo sound, can be mapped to left, right or both speakers

Display

Reflective LCD 160 x 144 pixels

Colour Pallette

4 shades of gray

Sprites

40 sprites of either 8 x 8 or 8 x 16 pixels [switchable]

Communication

Up to 4 Gameboys can be linked together via serial ports

Power

6 Volts, 0.7 Watts (4 AA Batteries - 35 hours (GameBoy)/2 AAA batteries - 10 hours (GameBoy Pocket))