https://github.com/horizon-oc/horizon-oc

An open source overclocking tool for Nintendo Switch consoles running Atmosphere custom firmware
https://github.com/horizon-oc/horizon-oc

homebrew nintendo-hacking nintendo-switch nintendo-switch-homebrew overclocking overclocking-tools

Last synced: 7 days ago
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An open source overclocking tool for Nintendo Switch consoles running Atmosphere custom firmware

• Host: GitHub
• URL: https://github.com/horizon-oc/horizon-oc
• Owner: Horizon-OC
• License: other
• Created: 2025-08-22T20:13:48.000Z (9 months ago)
• Default Branch: master
• Last Pushed: 2025-10-03T20:40:47.000Z (8 months ago)
• Last Synced: 2025-10-03T21:08:28.670Z (8 months ago)
• Topics: homebrew, nintendo-hacking, nintendo-switch, nintendo-switch-homebrew, overclocking, overclocking-tools
• Language: C++
• Homepage:
• Size: 68.9 MB
• Stars: 7
• Watchers: 1
• Forks: 4
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md
  • Security: SECURITY.md

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### DISCLAIMER: THIS TOOL CAN BE DANGEROUS IF MISUSED. PROCEED WITH CAUTION

* Due to the design of Horizon OS, overclocking RAM can cause **NAND DAMAGE**. Ensure to have a NAND Backup


A open source overclocking tool for Nintendo Switch consoles running Atmosphere custom firmware


## Features:

CPU overclock up to 2397MHz on Mariko units, 2091MHz on Erista units


GPU up to 1305MHz on Mariko units, 998MHz on Erista units


RAM up to 3200MHz on Mariko units, 2360MHz on Erista units


Over/undervolting


Configurator


Works with most homebrew


*Higher (potentially dangerous) frequencies are unlockable*


*The exact maximum overclock varies per console*


## Installation

Ensure you have the latest version of [Atmosphere](https://github.com/Atmosphere-NX/Atmosphere) and [Ultrahand](https://github.com/ppkantorski/Ultrahand-Overlay) installed before continuing


Grab latest hoc.kip from releases tab


If using hekate, edit hekate_ipl.ini to include "kip1=atmosphere/kips/*". No need for editing if using fusee


Download latest Horizon OC sysmodule from releases tab


Extract sysmodule into root of SD card


Alternatively, you can download the configurator and click the two install buttons


## Configuration

Download the latest configurator on your computer


Run the file


Select the drive your SD card or UMS device is mounted as


Configure the kip to your liking, and in the end, save it


## Building

Set up a development enviorment ready to compile Atmosphere


Git clone Atmosphere, and move the cloned folder into build/


Insert Source/stratosphere folder into build/


Run build.sh

To build the configurator, cd into Source/Configurator


Run build.bat or  run "python -m PyInstaller --onefile --add-data "assets;assets" --icon=assets/icon.ico --noconsole src/main.py"


## Credits

Lightos for RAM timings


meha for Switch-Oc-Suite


sys-clk team for sys-clk


b0rd2death for Ultrahand sys-clk fork


Lightos and Sammybigio2011 for early testing