Garry's Mod PC system requirements
Source: Steam store page (appid 4000, via the store appdetails API). Fetched . Copied verbatim; the publisher can change these at any time.
Why this game is here: it was #53 on Steam's most-played chart (ranked by daily peak concurrent players, rollup 2026-10-29 UTC).
Minimum (verbatim)
| OS | Windows® 10 |
|---|---|
| Processor | 2 GHz Processor or better |
| Memory | 4 GB RAM |
| Graphics | 1GB dedicated VRAM or better |
| DirectX | Version 9.0c |
| Network | Broadband Internet connection |
| Storage | 10 GB available space |
| Sound Card | DirectX® 9 compatible |
| Additional Notes | Mouse, Keyboard, Monitor |
Recommended (verbatim)
| OS | Windows® 10/11 |
|---|---|
| Processor | 2.5 GHz Processor or better |
| Memory | 8 GB RAM |
| Graphics | 4GB dedicated VRAM or better |
| DirectX | Version 9.0c |
| Network | Broadband Internet connection |
| Storage | 25 GB available space |
What this means
Steam's minimum list is the lowest hardware the publisher says the game supports. The recommended list is what the publisher suggests for a better experience. Neither list says which settings, resolution or frame rate it targets unless the publisher's notes say so. Where a line lists two parts (for example an NVIDIA or an AMD card), the publisher treats either as meeting that tier.
Gap between minimum and recommended
| Component | Minimum | Recommended | Difference |
|---|---|---|---|
| OS | Windows® 10 | Windows® 10/11 | Different (see the verbatim lists above) |
| Processor | 2 GHz Processor or better | 2.5 GHz Processor or better | Different (see the verbatim lists above) |
| Memory | 4 GB RAM | 8 GB RAM | Recommended asks for 4 GB more |
| Graphics | 1GB dedicated VRAM or better | 4GB dedicated VRAM or better | Different (see the verbatim lists above) |
| DirectX | Version 9.0c | Version 9.0c | Same in both tiers |
| Storage | 10 GB available space | 25 GB available space | Recommended asks for 15 GB more |
How it compares
Minimum RAM here is 4 GB. Of the 60 games in our system-requirements set, 6 list a lower RAM minimum and 46 list a higher one (same data source, same fetch).