CoreFreq vs Notebook FanControl

CoreFreq is free Linux CPU-monitoring software with BIOS-like controls for 64-bit processors. It reads frequencies, ratios, performance counters, instructions per cycle, C-states, temperature, and documented core-voltage readings. The interface shows processor features, brand and architecture strings, plus a topology map including caches. Its driver exposes controls for Turbo Boost, power management, thermal limits, prefetchers, and hardware-controlled performance states. A daemon and command-line client provide monitoring views and JSON-encoded system information. Listed architectures include Intel and AMD families, Arm A64, RISC-V RV64, and PowerPC64 LE. Requirements include Linux kernel 3.3 or newer and GNU C Library. Installation can use source builds or packages for several distributions. The project is GPL-2.0 licensed and uses shared memory between its kernel module and user-space component. Some virtual machines may hide required registers. Driver signing is required when kernel signature verification is enabled. The interface renders best in ASCII or VT100 terminals.

Notebook FanControl (NBFC) is a free, open-source service for controlling notebook fans on Windows and Linux. Its configuration system adapts the service to many notebook models. Windows users run an installer, choose a notebook configuration, and apply it so NBFC can control the fans. Linux users build the software themselves, install its systemd service, and apply a notebook configuration; the project provides no pre-built Linux releases. Downloads are linked through GitHub releases and a Chocolatey package. The repository includes the GNU General Public License version 3. An FAQ points to a supported-notebook list and says a configuration for a similar model may work when yours is absent. The maintainer does not create individual configurations, so users may need to make one themselves. Some systems have conflicts with ImDisk Toolkit or HWiNFO. Nvidia Optimus notebooks may lose fan control while the dedicated GPU is active, and Linux Secure Boot can require disabling.