SNES Super FX Overclocking

Published on  by Gearloose ‐ In  ‐ Reading time: less than a minute
SNES Super FX Overclocking

The Super FX was an extra graphics processor included in some Super Nintendo games. Using this chip, games like Star Fox were able to handle polygons and intensive sprite scaling. You can change the ceramic resonator with one faster. The result is a smoother frame rate and minimal slow down with multiple enemies.

Needed items:

-Two ceramic capacitors at 18pf
-An 24mhz quartz crystal (or 26Mhz if you find one)

First of all this mod is for cartridges that have the GSU1 and GSU2 FX chips. The older one MARIO CHIP 1 (used only in StarFox) can't be overclocked. To do this mod you must open the cartridge and find the resonator. Take a look in the picture below to see the resonator from Vortex's cartridge.

SNES Super FX Overclocking 1

You must replace the resonator with an 24mhz quartz crystal (a faster around 26MHz would be optimal). When solder the resonator, you must put the capacitors. Just take a look into the second picture for the capacitors.

SNES Super FX Overclocking 2
SNES Super FX Overclocking 3

After this mod, the game ran at with more speed and much, much smoother.

Props to marshallh from the forums.


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