# Switch OC Suite
[](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)
Overclocking suite for Horizon OS (HOS) running on Atmosphere CFW.
[Project Homepage](https://kazushime.github.io/Switch-OC-Suite)
**DISCLAIMER: USE AT YOUR OWN RISK!**
- Overclocking in general will shorten the lifespan of some hardware components. **YOU ARE RESPONSIBLE for any problem or potential damage** if unsafe frequencies are ENABLED in sys-clk-OC. Issues like asking for bypassing limit will BE IGNORED OR CLOSED WITHOUT REPLY.
- Due to HorizonOS design, instabilities from unsafe RAM clocks may cause filesystem corruption. **Always make backup before enabling DRAM OC.**
## Features
- Erista variant (HAC-001)
- CPU Overclock (Safe: 1785 MHz)
- Unsafe
- Due to the limit of board power draw or power IC
- Unlockable frequencies up to 2091 MHz
- See [README for sys-clk-OC](https://github.com/KazushiMe/Switch-OC-Suite/blob/master/Source/sys-clk-OC/README.md)
- DRAM Overclock (Safe: 1862.4 MHz)
- Mariko variant (HAC-001-01, HDH-001, HEG-001)
- CPU / GPU Overclock (Safe: 1963 / 998 MHz)
- Unsafe
- Due to the limit of board power draw or power IC
- Unlockable frequencies up to 2397 / 1305 MHz or 2295 / 1267 MHz
- See [README for sys-clk-OC](https://github.com/KazushiMe/Switch-OC-Suite/blob/master/Source/sys-clk-OC/README.md)
- DRAM Overclock (Safe: 1996.8 MHz)
- Modded sys-clk and ReverseNX-RT
- Auto CPU Boost
- For faster game loading
- Enable CPU Boost (1785 MHz) when CPU Core#3 (System Core) is stressed (mainly I/O operations).
- Effective only when charger is connected.
- CPU & GPU frequency governor (Experimental)
- Adjust frequency based on load. Might decrease power draw but can introduce stutters. Can be turned off for specific titles.
- Set charging current (100 mA - 2000 mA) and charging limit (20% - 100%)
- Long-term use of charge limit may render the battery gauge inaccurate. Performing full cycles could help recalibration, or try [battery_desync_fix_nx](https://github.com/CTCaer/battery_desync_fix_nx).
- Global Profile
- Designated a dummy title id `0xA111111111111111`.
- Priority: "Temp overrides" > "Application profile" > "Global profile" > "System default".
- Sync ReverseNX Mode
- No need to change clocks manually after toggling modes in ReverseNX (-RT and -Tool)
- **[System Settings (Optional)](https://github.com/KazushiMe/Switch-OC-Suite/blob/master/system_settings.md)**
## Installation
1. Download latest [release](https://kazushime.github.io/Switch-OC-Suite/#download).
2. Copy all files in `SdOut` to the root of SD card.
3. Grab `x.x.x_loader.kip` for your Atmosphere version, rename it to `loader.kip` and place it in `/atmosphere/kips/`.
4. Customization via [online loader configurator](https://kazushime.github.io/Switch-OC-Suite/#config):
| Defaults | Mariko | Erista |
| ---------- | ------------- | ------------ |
| CPU OC | 2397 MHz Max | 2091 MHz Max |
| CPU Boost | 1785 MHz | N/A |
| CPU Volt | 1235 mV Max | 1235 mV Max |
| GPU OC | 1305 MHz Max | N/A |
| RAM OC | 1996 MHz Max | 1862 MHz Max |
| RAM Volt | Disabled | Disabled |
| RAM Timing | Auto-Adjusted | N/A |
5. Hekate-ipl bootloader Only
- Add `kip1=atmosphere/kips/loader.kip` to boot entry section in `bootloader/hekate_ipl.ini`.
Deprecated: patching sysmodules manually
- This method is only served as reference as it could damage your MMC file system if not handled properly.
- Patched sysmodules would be persistent until pcv or ptm was updated in new HOS (normally in `x.0.0`).
- Tools:
- Lockpick_RCM
- TegraExplorer
- [hactool](https://github.com/SciresM/hactool)
- [nx2elf](https://github.com/shuffle2/nx2elf)
- elf2nso from [switch-tools](https://github.com/switchbrew/switch-tools/)
- [hacpack](https://github.com/The-4n/hacPack)
1. Dump `prod.keys` with Lockpick_RCM
2. Dump HOS firmware with TegraExplorer
3. Configure and run `test_patch.sh` to generate patched pcv & ptm sysmodules in nca
4. Replace nca in `SYSTEM:/Contents/registered/` with TegraExplorer
5. `ValidateAcidSignature()` should be stubbed to allow unsigned sysmodules to load (a.k.a. `loader_patch`)
## Build
Grab necessary patches from the repo, then compile sys-clk, ReverseNX-RT and Atmosphere loader with devkitpro.
Before compiling Atmosphere loader, run `patch.py` in `Atmosphere/stratosphere/loader/source/` to insert oc module into loader sysmodule.
When compilation is done, uncompress the kip to make it work with configurator: `hactool -t kip1 Atmosphere/stratosphere/loader/out/nintendo_nx_arm64_armv8a/release/loader.kip --uncompress=./loader.kip`
## Acknowledgement
- CTCaer for [Hekate-ipl](https://github.com/CTCaer/hekate) bootloader, RE and hardware research
- [devkitPro](https://devkitpro.org/) for All-In-One homebrew toolchains
- masagrator for [ReverseNX-RT](https://github.com/masagrator/ReverseNX-RT) and info on BatteryChargeInfoFields in psm module
- Nvidia for [Tegra X1 Technical Reference Manual](https://developer.nvidia.com/embedded/dlc/tegra-x1-technical-reference-manual)
- RetroNX team for [sys-clk](https://github.com/retronx-team/sys-clk)
- SciresM and Reswitched Team for the state-of-the-art [Atmosphere](https://github.com/Atmosphere-NX/Atmosphere) CFW of Switch
- Switchbrew [wiki](http://switchbrew.org/wiki/) for Switch in-depth info
- Switchroot for their [modified L4T kernel and device tree](https://gitlab.com/switchroot/kernel)
- ZatchyCatGames for RE and original OC loader patches for Atmosphere