NVIDIA_OC Daemon

Summary

NVIDIA_OC Daemon is a free Rust daemon for applying NVIDIA GPU overclocking settings through NVML on Linux. It is intended for systems where X.Org Coolbits tools such as GreenWithEnvy or nvidia-settings are unavailable or undesirable, including Wayland setups. The daemon reads TOML settings from /etc/nvidia_oc/config for GPU clock offsets, memory clock offsets, and power limits, with controls available per device. On first run it creates the configuration file from currently reported GPU settings. It watches /etc/nvidia_oc recursively and reloads changes after a five-second debounce. Logs go to the terminal and to demon.log in the process working directory. It requires a supported NVIDIA GPU and a driver exposing NVML as libnvidia-ml.so. Building requires a Rust toolchain, while creating configuration or applying settings requires root or equivalent permissions. The repository does not include a systemd unit. The project warns that overclocking and power-limit changes can crash systems, damage hardware, void warranties, or leave a machine unbootable; some laptop GPUs or driver and device combinations may not expose power-limit operations.

Who it is for

It suits Linux users with supported NVIDIA GPUs who need to apply clock or power settings where X.Org Coolbits tools are not wanted or available. Users need an NVML-capable driver and root-equivalent permissions to configure or apply settings.

Compared on GPU tuning software

Free plan

Yesgithub.com

Supported platforms

Linux; NVIDIA GPUgithub.com

Clock offset control

Yesgithub.com

Power-limit control

Yesgithub.com

Facts

Purpose

NVIDIA_OC Daemon is a Rust daemon for applying NVIDIA GPU overclocking settings through NVML.github.com · 30 Sept 2026

Target systems

It is intended for systems where X.Org Coolbits tools such as GreenWithEnvy or nvidia-settings are unavailable or undesirable, including Wayland setups.github.com · 30 Sept 2026

Configuration

The daemon loads TOML configuration from /etc/nvidia_oc/config and applies GPU clock offsets, memory clock offsets, and power limits.github.com · 30 Sept 2026

Reloading

It watches /etc/nvidia_oc recursively and reloads modified configuration after a five-second debounce.github.com · 30 Sept 2026

First-run setup

On first run, it generates /etc/nvidia_oc/config from the currently reported GPU settings.github.com · 30 Sept 2026

Per-device controls

Configuration supports per-device GPU frequency offsets, memory frequency offsets, and power management limits.github.com · 30 Sept 2026

Logging

The daemon logs to the terminal and to demon.log in its process working directory.github.com · 30 Sept 2026

Requirements

It requires Linux with a supported NVIDIA GPU and an NVIDIA driver exposing NVML as libnvidia-ml.so.github.com · 30 Sept 2026

Build and privileges

Building requires a Rust toolchain, and creating the configuration or applying settings requires root or equivalent permissions.github.com · 30 Sept 2026

Integration

The project uses NVIDIA Management Library through nvml-wrapper and direct NVML bindings.github.com · 30 Sept 2026

Safety warning

The README warns that overclocking and changing GPU power limits can crash systems, damage hardware, void warranties, or make a machine unbootable.github.com · 30 Sept 2026

Hardware limits

Some laptop GPUs or driver/device combinations may not support querying or setting power limits, and NVML calls can fail when operations are not exposed.github.com · 30 Sept 2026

Deployment limit

The repository does not currently include a systemd unit.github.com · 30 Sept 2026

License

The software is distributed under the MIT License, which grants permission to use, copy, modify, publish, distribute, sublicense, and sell copies subject to license conditions.github.com · 30 Sept 2026

Where it ranks on Everything Xiaomi

• Best GPU Tuning Software in 2026#4 of 15

Sources

• github.com/Big-Smarty/nvidia_oc_daemon· checked 30 Sept 2026
• github.com/Big-Smarty/nvidia_oc_daemon/blob/main/L· checked 30 Sept 2026