Train Simulator Classic system requirements and storage: what do you need?

Train Simulator Classic requires a 64-bit Windows PC, 4 GB RAM, an Intel Core i3-4330 or AMD FX-6300-class CPU, a GTX 750 Ti or Radeon R9 270-class GPU, and 40 GB free. For real-world use, we recommend an SSD, 16 GB RAM and at least 100 GB available for add-ons and updates.

Train Simulator Classic minimum and recommended PC requirements

The official minimum specification will run the core simulator, but the recommended specification is a safer starting point for detailed routes, busy scenarios and higher graphics settings.

These figures apply to Train Simulator Classic, the RailWorks-based Windows simulator. The named processors and graphics cards are comparison points, not parts you must find second-hand. A newer component is suitable when its actual performance equals or exceeds the listed model; clock speed and model labels alone are unreliable across different generations.

The older Windows versions shown in published requirements reflect the simulator's long history, not security advice. Train Simulator Classic has no native macOS or Linux version, and compatibility layers fall outside its official PC requirements.

The launcher may offer 32-bit and 64-bit game modes even though the operating-system requirement is 64-bit. Use the 64-bit mode for normal play and memory-heavy routes. Choose 32-bit only when a specific legacy add-on explicitly requires it, because that mode has a much lower usable-memory ceiling.

How large is Train Simulator Classic, and is 40 GB enough?

Forty gigabytes is the official starting allowance, not a realistic maximum for an expanding Train Simulator Classic installation. There is no single exact game size because editions, bundles and individual accounts contain different combinations of routes and rolling stock.

Three storage figures are often confused:

• Download size is the compressed data transferred to the PC.
• Installed size is the space occupied by the unpacked simulator and all installed content.
• Required free space also includes temporary room needed while Steam downloads, stages and replaces files.

For the core simulator and a small collection, start with the published 40 GB requirement but retain extra update headroom. Reserving at least 100 GB on an SSD is more sensible if you expect to add several routes. Established collections can occupy several hundred gigabytes.

Storage use grows through:

• Route and locomotive DLC, including shared scenery, track and rolling-stock assets.
• Workshop routes and scenarios, which may require other installed products.
• Manually installed freeware in the Assets and Content folders.
• Route-building source files, exported packages and personal backups.

Dependencies matter as much as the headline size of an individual route. Our route and DLC selection advice explains how additional content and shared requirements expand an installation.

Where are the Train Simulator Classic files stored?

The main installation is normally in Steam\steamapps\common\RailWorks. A custom Steam library places the same RailWorks folder on whichever drive was selected during installation.

Steam's Properties > Installed Files screen identifies the active location. Windows can also calculate the size of the complete RailWorks folder, although separate downloads, archives and backups stored elsewhere will not be included.

Use Steam's storage controls to move the installation between drives rather than dragging the folder manually. Our Steam installation and drive-selection walkthrough covers this process and the first launch.

Do not delete random subfolders from Assets or Content to recover space. Routes commonly share dependencies, so removing an apparently unused asset can cause missing track, scenery or trains elsewhere. Steam verification can restore owned official files, but it cannot recover manually installed freeware or personal route edits.

Why can an update fail when the installed game still fits?

Steam may need temporary working space on the library drive while it downloads and rebuilds packaged files, so the final update size is not the full amount of free space required.

1. Check the correct drive. Free space on another disk does not help if the active Steam library containing RailWorks is nearly full.
2. Create update headroom. Move or uninstall another Steam title through its storage controls rather than deleting Train Simulator Classic files.
3. Move the complete installation if necessary. A larger SSD is preferable to repeatedly operating with only a few gigabytes spare.
4. Resume and verify after space is available. File verification repairs missing official content, but it does not solve an undersized drive.

Workshop subscriptions can also reinstall content automatically. Use the normal subscription controls and check dependencies before removing anything; our Workshop installation and content-management guide explains how those items are handled.

How can I tell if my PC can run Train Simulator Classic?

Compare the complete model names of your processor and graphics hardware with the published baseline, then check memory, Windows architecture and free storage separately.

1. Confirm 64-bit Windows. Open Windows system information and check the system type rather than assuming a 64-bit processor means the installed operating system is also 64-bit.
2. Identify the CPU and GPU. The built-in dxdiag tool shows the processor, memory and display adapter. Compare actual component performance, not just GHz, core count or the presence of an i5 or Ryzen badge.
3. Check usable RAM. Four gigabytes meets the published minimum but leaves very little room for Windows. Eight gigabytes is a workable floor; 16 GB is the better target.
4. Measure the correct drive. Allow for the installed game, temporary update files and future routes rather than checking only the download estimate.
5. Consider sustained laptop performance. Mobile processors and GPUs can run more slowly than similarly named desktop parts, particularly when restricted by heat or battery-saving modes.

What if the specifications are sufficient but the simulator will not launch?

Meeting the minimum specification does not rule out missing prerequisites, the wrong graphics adapter or a broken add-on.

• Legacy DirectX components: A PC may report DirectX 12 while still lacking an optional library expected by an older application. Allow Steam to run the supplied prerequisite installers and verify the game files; do not download individual DLL files from unrelated sites.
• Wrong laptop GPU: Windows may start the simulator on integrated graphics instead of the dedicated GPU. Select the high-performance adapter in Windows graphics settings and connect the laptop to mains power.
• 32-bit mode: Memory-heavy routes may fail or become unstable when launched in 32-bit mode. Retry in 64-bit mode unless a particular legacy add-on requires otherwise.
• Add-on-specific failures: If one route crashes but an included route works, investigate that route's dependencies before replacing hardware.

Which hardware upgrades make the biggest difference?

A faster processor and an SSD usually improve Train Simulator Classic more consistently than an oversized graphics card bought for this simulator alone.

• Choose a CPU upgrade when frame rates fall in busy stations or AI-heavy scenarios even after reducing graphical settings. Strong per-core performance matters more than adding many slow cores.
• Choose a GPU upgrade when lowering resolution, anti-aliasing or shadows produces a large improvement. Higher resolutions and dense scenery place more load on the graphics card.
• Choose an SSD when loading times are long or pauses coincide with scenery being read from disk. An SSD cannot eliminate every stutter caused by route scripting or the game engine.
• Choose more RAM when Windows is paging heavily or you run other applications alongside the simulator. Moving from 4 GB to 8 GB is significant; 16 GB gives complex content more breathing room.

Can Train Simulator Classic run on a laptop?

Yes, provided the laptop's sustained CPU and graphics performance meets the desktop-class baseline and it has enough storage.

A modern integrated GPU may run lighter routes at reduced settings, but integrated graphics should not be assumed equivalent to the published dedicated cards merely because Windows reports a large amount of shared memory. Keep the laptop connected to mains power, use its performance profile and ensure cooling vents are unobstructed.

Do the Train Simulator 2016 system requirements still apply?

No: old Train Simulator 2016 requirements should not be used to size a fresh Train Simulator Classic installation.

Train Simulator 2016 was an annual edition of the same long-running platform rather than a separate replacement simulator. The core application continued to receive updates and later branding, while each edition included a different selection of routes and trains.

If your Steam ownership began with Train Simulator 2016, use the present Train Simulator Classic requirements above. An archived 2016 listing may show lower hardware or storage figures based on that edition's core and bundled content, but it does not account for later updates, DLC or Workshop dependencies.

Does Train Simulator Classic require an internet connection?

An internet connection is needed for the Steam installation, updates and downloading DLC or Workshop content, but many installed routes and scenarios can then be used offline.

Install and test every required route, locomotive and dependency before disconnecting. Subscription changes and missing local files cannot be resolved offline; our offline preparation advice lists what must already be stored on the PC.