Gameboy Advance Overclocker Flex

***US customers – All import duties are included in the cost, there will be no additional fees to pay on delivery***

robot_retro GBA Overclocker Flex Mod

Easily overclock or underclock your Game Boy Advance to speed up or slow down gameplay—with a simple, streamlined installation that eliminates most manual wiring (except for an optional LED indicator wire).

Key Features

• Supports adjustable clock speeds at 30%, 50%, 75%, 130%, 150%, and 170% of the base clock.
• Increase speed: Press Start + Up
• Decrease speed: Press Start + Right
• Optional LED indicator connected to test point DL2A:
  • Power LED blinks faster when overclocked
  • Power LED blinks slower when underclocked
  • Solid green LED at base (stock) speed
• Top speed limits configurable to 170%, 150%, or 130% depending on your screen setup:
  • Default max speed: 170% (compatible with stock LCD, Funnyplaying v2, Hispeedido Laminated v5)
  • Bridge solder jumper S1 to limit max speed to 150% (for Hispeedido v2 non-laminated)
  • Bridge solder jumper S2 to limit max speed to 130% (for Funnyplaying 3.0 inch laminated)

Other Benefits

Ultra-low power consumption: <15mA (measured with Nordic Power Profiler Kit II)

Extremely accurate base clock: 4.194 MHz ±0.01%, matching the original GBA crystal at stock speeds

Installation Instructions

YouTube install guide from JoeBleeps is here.

1. Remove the original GBA crystal.  (Recommended: Use a hot air station for clean removal.)
2. Install the flex mod following the photos.
3. Solder the 6 points highlighted in pink circles.
4. Use flux for best soldering results.
5. (Optional) Connect the flex mod to test point DL2A (yellow circles) to enable the LED speed indicator.

Speed Limiting Jumpers

• Bridge solder jumper S1 to cap speed at 150%
• Bridge solder jumper S2 to cap speed at 130%

Developed in collaboration with RJS FPGA.