cpufetch-rs

A cross-platform Rust rewrite of cpufetch — fetches and displays detailed CPU information with colourful ASCII art.

Status: Early development (v0.0.1). Core CPU detection works, display formatting is in progress.

What it detects

• Vendor and model — Intel, AMD, Apple Silicon, ARM
• Microarchitecture — Raptor Lake, Zen 5, Firestorm, etc.
• Core topology — physical cores, logical threads
• Frequencies — base and boost clocks
• ISA extensions — SSE, AVX, AVX-512, FMA, NEON, AES, SHA, and more
• Cache hierarchy — L1i/L1d, L2, L3 sizes
• Hypervisor detection — KVM, VMware, Hyper-V, etc.
• Peak performance — theoretical GFLOP/s estimate

Platform support

Install

From crates.io:

cargo install cpufetch-rs

Or download a pre-built binary from GitHub Releases.

Build from source

git clone https://github.com/sm-moshi/cpufetch-rs
cd cpufetch-rs
cargo build --release
./target/release/cpufetch

Minimal build (core detection only)

cargo build --release --no-default-features

Usage

cpufetch                  # Colourful output with vendor logo
cpufetch --json           # JSON output
cpufetch --no-logo        # Text only, no ASCII art
cpufetch --no-color       # Plain text, no colours
cpufetch --frequency      # Show frequency details
cpufetch --cache          # Show cache topology
cpufetch --features       # Show ISA feature flags

Feature flags

All features are optional and gated behind Cargo features. default = ["full"] enables everything.

Development

mise install                        # Install dev tools
mise run test                       # Run tests
mise run lint                       # Clippy (pedantic)
mise run fmt                        # Format check
mise run audit                      # Security audit

See CONTRIBUTING.md for guidelines.

Licence

Dual-licensed under MIT and Apache 2.0.