Sega X Board

From Sega Retro

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Sega X Board
Manufacturer: Sega
Release Date RRP Code

The Sega X Board is an arcade system board released by Sega in 1987 as a successor to Sega OutRun Hardware. It debuted with After Burner and Thunder Blade.

The X Board specification is largely similar to that of the OutRun Hardware board, however allows for twice as many sprites on screen at once and twice as many tile layers. The contents have also been condensed onto a single board making it slightly easier to manufacture.

The X Board would be succeeded by the Y Board, before the Model 1 made true 3D arcade games more financially affordable.

Technical Specifications

  • Main CPU: 2 x MC68000 @ 12.5 MHz
  • Sound CPU: Z80 @ 4 MHz
  • Sound chip: YM2151 4 MHz & SegaPCM @ 15.625 MHz
  • Video resolution: 320 x 224
  • Board composition: Single board
  • Hardware Features: 256 sprites on screen at one time, 4 tiles layers, 1 text layer, 1 sprite layer with hardware sprite zooming, 1 road layer, can draw 2 roads at once, translucent shadows

List of Games


Sega arcade boards
Originating in arcades









Console-based hardware








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PC-based hardware








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