Here are the Garry's Mod system requirements (minimum)
- CPU: Info
- CPU SPEED: 1.8 GHz Processor
- RAM: 2 GB
- OS: Windows® Vista/XP
- VIDEO CARD: DirectX® 9 level Graphics Card (Requires support for SSE)
- SOUND CARD: DirectX® 9 compatible
- FREE DISK SPACE: 5 GB
Garry's Mod Recommended Requirements
- CPU: Info
- CPU SPEED: 2.5 GHz Processor or better
- RAM: 8 GB
- OS: Windows® 7/8/8.1/10
- VIDEO CARD: 1GB dedicated VRAM or better
- SOUND CARD: DirectX® 9 compatible
- FREE DISK SPACE: 10 GB