Leave room for the simulator first. These are provisional sizing recommendations, not measured minimum requirements.
Windows & simulator
64-bit Windows 10/11 and iRacing for live race data. A microphone is needed for voice questions; typed questions remain an option.
CPU recommendation
A modern six-core processor, such as an AMD Ryzen 5 5600 or Intel Core i5-12400, is a provisional starting point. Faster cores and spare CPU capacity help when local voice processing runs alongside the simulator.
System RAM
Start with 16 GB total system RAM; 32 GB is recommended for more room alongside iRacing, overlays and local voice models. The Moonshine estimates below cover speech recognition only, not the complete app or simulator.
Downloads & disk space
Installer size varies by Alpha release. Optional Moonshine speech models add approximately 37 MB (Tiny), 122 MB (Small) or 237 MB (Medium) to download. Natural Radio has a separate optional model download after you enable it. Allow extra disk space for installation, updates and voice profiles.
Moonshine RAM estimate
Speech recognition only · approximate sizes
Model
Model files
RAM estimate
Tiny
45 MB
0.3–0.6 GB
Small
142 MB
0.5–1 GB
Medium
269 MB
0.8–1.5 GB
Estimates start from unpacked model size, then allow for runtime overhead, working buffers and speech context. They are not measured peak RAM figures. Moonshine is optional and experimental.
Performance during a race
Speech recognition, voice generation and optional Natural Radio share CPU and memory with iRacing. They may increase response latency or affect frame times on a busy PC; no FPS-impact figure is established. Try your setup in practice first, and start with a smaller speech model if headroom is limited.
Measurements still ahead
Real RAM, CPU, latency and frame-time measurements from opt-in machines are still pending. We will refine these recommendations when that evidence is available.
TeamManager connection
Optional for core local race features. Sign-in is required for the protected Alpha download and connected team features.
Race Engineer works locally.
Its core race features work without an active TeamManager connection.
Local Race Engineer is nearly ready. TeamManager is in development for an upcoming Alpha.
