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[](https://dsc.gg/horizonoc)
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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 OR SD CORRUPTION.**
> Ensure you have a **full NAND, PRODINFO, EMUMMC and SD backup** before proceeding.
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## About
**Horizon OC** is an open-source overclocking tool for Nintendo Switch consoles running **Atmosphere custom firmware**.
It enables advanced CPU, GPU, and RAM tuning with user-friendly configuration tools.
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## Default clocks
* **CPU:** 1963MHz (Mariko) / 1785MHz (Erista)
* **GPU:** 1152MHz (Mariko) / 921MHz (Erista)
* **RAM:** 2133MHz (Mariko) / 1600MHz (Erista)
* Over/undervolting support
* Built-in configurator
* Compatible with most homebrew
> It is recommended to read the [guide](https://rentry.co/howtoget60fps) before proceeding, as this can help you get a *significant* performance boost over the default settings, often times with less power draw and heat output
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## Installation
1. Ensure you have the latest versions of
* [Atmosphere](https://github.com/Atmosphere-NX/Atmosphere)
* [Ultrahand Overlay](https://github.com/ppkantorski/Ultrahand-Overlay)
2. Download and extract **Horizon OC** to the root of your SD card.
3. If using **Hekate**, edit `hekate_ipl.ini` to include:
```
kip1=atmosphere/kips/hoc.kip
secmon=atmosphere/exosphere.bin
```
*(No changes needed if using fusee.)*
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## Configuration
1. Open the Horizon OC Overlay
2. Open the settings menu
3. Adjust your overclocking settings as desired. A helpful guide can be found [here.](https://rentry.co/mariko#oc-settings-for-horizon-oc)
4. Click **Save KIP Settings** to apply your configuration.
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## Donating
We don't accept donations. Put your spare cash into a charity instead :)
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## Building from Source
Refer to COMPILATION.md
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Higher clocks are achievable via undervolting or further configuration, refer to this table for more details.
The averages are only for reference. Each ram is different and must be tuned independently. Refer to the guide for more details!