For a Space Engineers dedicated server, Keen’s published baseline is a 3.2 GHz CPU with three logical cores and 6 GB of RAM. The recommended tier raises the CPU to 4.5 GHz while keeping three logical cores, and raises memory to 10 GB. The headless server does not need a graphics card. Budget roughly 8 GB for the initial server files, then add space for worlds, logs, backups and mods. These figures describe the dedicated server, not the graphical game client running on a player’s PC.
What are the official Space Engineers dedicated-server requirements?
Keen’s dedicated-server guidance defines two hardware tiers. The minimum is intended to establish a supported starting point; the recommended tier provides more CPU and memory headroom. Neither tier is a player-count guarantee, because simulation load varies with grids, scripts, physics activity, mods and save complexity.
| Resource | Minimum | Recommended | How to interpret it |
|---|---|---|---|
| CPU | 3.2 GHz, 3 logical cores | 4.5 GHz, 3 logical cores | The published recommendation changes clock speed, not logical-core count. That indicates higher per-core speed is the stated distinction, not a measured performance promise. |
| RAM | 6 GB | 10 GB | Installed memory must also cover Windows, monitoring, backups and any other services on the machine. |
| Storage | About 8 GB for SEDS files | No fixed total published | World saves, logs, downloaded mods, update staging and backups grow beyond the initial installation. |
| GPU | Not required | Not required | The dedicated server is headless software. |
| Operating system and runtime | Windows PC, .NET Framework 4.8 and Visual C++ x64 redistributable | Same | These are setup prerequisites in the dedicated-server documentation. |
A host that merely matches the minimum may launch the service, but it leaves little room for background work. Treat the recommended figures as the sensible target for a new installation, then increase resources if the world or mod set grows.
How much RAM does a Space Engineers server need?
The official floor is 6 GB, while Keen recommends 10 GB for the dedicated-server workload. A machine with exactly 10 GB installed cannot devote all of it to the game: Windows, updates, monitoring, backups and other processes need memory too.
When is 16 GB a better target?
A 16 GB Windows host is a practical buying target when you want operating-system headroom or expect a persistent survival world. Current requirements explainers describe 16 GB as optional practical guidance, not as a new Keen requirement. It gives the server room to share memory with Windows and routine administration without immediately operating at the published 10 GB ceiling.
How do hosted plans describe RAM?
One Windows VPS guide uses provider examples of 12 GB for a small group and 16 GB or more for a busier survival world. Those numbers describe example hosting plans, not universal capacity rules. The correct choice depends on the world, player activity and background services, so do not convert them into a guaranteed player limit.
What should I monitor?
- Record total and available RAM while the world is quiet and while players are active.
- Leave room for Windows and scheduled backups instead of treating every installed gigabyte as game memory.
- Watch for sustained paging or an operating system that terminates processes under memory pressure; those symptoms mean the host needs more RAM or fewer simultaneous services.
What CPU do I need for a Space Engineers dedicated server?
Choose at least 3.2 GHz with three logical cores, and prefer 4.5 GHz with three logical cores when selecting a new host. Because both published tiers specify three logical cores, Keen’s table makes per-core clock speed the visible upgrade. This is an inference from the requirements table, not an independent benchmark.
Does a higher core count automatically help?
Not according to the published tiers. A provider may advertise many cores, but a lower-clocked virtual CPU is not automatically equivalent to the recommended 4.5 GHz figure. Compare the host’s sustained per-core performance and whether the advertised vCPUs are shared, rather than judging the plan by total core count alone.
Can the requirements predict player count?
No. Keen’s requirements page does not state how many players, grids, scripts or mods either tier can sustain. Simulation speed depends on what is happening in the world, not simply on the number of connected accounts. Use the figures as compatibility baselines and validate a chosen host with your own save and workload.
What CPU details should I ask a host for?
- Whether the stated frequency is a sustained or burst value.
- Whether vCPUs share a physical processor with other customers.
- Whether CPU limits are enforced during peak host demand.
- How to monitor single-core utilization and simulation performance.
How much storage does a Space Engineers server need?
Allow roughly 8 GB for the initial Space Engineers Dedicated Server (SEDS) files. A managed-hosting guide reports about 8.4 GB for an initial installation, but that figure is only a starting snapshot. No authoritative total says that a particular disk size supports a particular player count.
What consumes disk space after installation?
- World and automatic-save files, which grow with the number and complexity of saved grids.
- Server logs and diagnostic output, especially when troubleshooting or running continuously.
- Downloaded mods and their updates.
- Rotating backups and a separate copy used during updates or rollback.
- Temporary files created while downloading, unpacking or staging an update.
How should I size the disk?
Start with more than the 8 GB installation allowance, then reserve explicit capacity for several world backups and free space for updates. Solid-state storage improves loading and file operations, but the requirements do not mandate a particular drive type. The important safety margin is enough free space that a backup or update cannot fill the volume and stop the server.
Does a dedicated server need a graphics card or gaming PC?
No. Keen describes the dedicated server as headless software, so a graphics card is not required. The machine does not need to render the game world for players; it runs the simulation and network service while each player’s computer renders its own client.
You do still need a supported Windows environment for the documented setup. Install .NET Framework 4.8 and the Visual C++ x64 redistributable before troubleshooting the server executable. A Windows desktop, spare PC or Windows VPS can work if it meets the CPU, memory, storage and networking requirements.
How do I install the dedicated server?
You can install it through Steam’s Tools library or with SteamCMD. The SteamCMD application ID for the server is 298740.
- Prepare a Windows machine with the required .NET Framework 4.8 and Visual C++ x64 redistributable.
- Choose one installation method: open Steam’s Tools library and install the dedicated-server tool, or use SteamCMD with application ID
298740. - Place the server files on a disk with room for the installation, saves, logs, mods and backups.
- Create or select the world and configure the server’s ports, visibility and administrative settings.
- Start the service and confirm that it remains running while checking its logs and resource usage.
- For public access, configure the host firewall and router port forwarding for the ports you selected.
- Test a remote connection before inviting other players, then schedule backups and monitor disk and memory use.
The exact port numbers can vary with the server configuration, so forward the ports shown by your installation rather than copying an unrelated preset. A static public IP is optional, but it is useful for a server that players must reach consistently.
What network connection does a Space Engineers server require?
The Steam listing says that no internet connection is needed for single-player use, while multiplayer is recommended at 5 Mbit/s or more. That is a general multiplayer recommendation, not a detailed dedicated-server bandwidth formula or an upload guarantee for every world.
What matters besides headline bandwidth?
- Reliable upstream capacity, because the server sends world and entity updates to connected players.
- Low and stable latency for responsive controls.
- A public address or forwarding arrangement that lets players reach the machine.
- Firewall rules that allow the configured server ports without exposing unrelated services.
If players can see the server but fail to connect, check the Windows firewall, router forwarding, the server’s bound address and whether the host is behind carrier-grade NAT. A stable address is more useful than a large theoretical bandwidth number when a small group connects regularly.
Can I host Space Engineers on a Windows VPS?
Yes, provided the VPS supplies Windows, supports the required .NET and Visual C++ components, and gives you enough dedicated or predictable CPU, RAM, disk and network access. VPS examples of 12 GB for a small group and 16 GB or more for a busier survival world are provider estimates, not guarantees.
What should I verify before renting one?
| Check | Why it matters |
|---|---|
| Per-core CPU speed | Compare it with Keen’s 3.2 GHz minimum and 4.5 GHz recommendation; total vCPU count alone is insufficient. |
| Usable RAM | Confirm how much remains after Windows and provider agents. Ten gigabytes is the server recommendation, not a whole-host allowance. |
| Disk and backups | Ensure the plan has room beyond the roughly 8 GB installation and understand whether snapshots cost extra. |
| Windows support | The documented server path requires Windows plus .NET Framework 4.8 and Visual C++ x64. |
| Networking | Check inbound port control, firewall access, public addressing and sufficient upstream bandwidth. |
What happens if the machine is below minimum?
A machine below the stated minimum may still start the server, but the dedicated-server guide says it will force-enable Experimental mode. Successful launch therefore does not prove that the hardware meets the supported baseline or will maintain stable simulation performance.
If you encounter this condition, first compare the host against the three published limits: 3.2 GHz, three logical cores and 6 GB RAM. Close unrelated services, move backups off the live volume and check whether the provider is throttling shared CPU. If the host still falls short, move the server to a machine that meets the baseline instead of treating Experimental mode as a performance fix.
Are the 35 GB and 8 GB client figures the same thing?
No. The official Steam client listing gives a 35 GB storage figure, with 8 GB minimum RAM and 16 GB recommended RAM for the graphical game client. Those values belong to the player’s installed game and should not be copied into a dedicated-server requirements table.
The dedicated server has its own roughly 8 GB file allowance and does not need a GPU. A player may therefore need a graphics-capable gaming computer, while the server can run headless on a Windows machine without one.
How should I choose between minimum and recommended hardware?
Use the minimum tier only when you understand that it is a baseline and have additional room for the operating system. For most persistent multiplayer setups, target the 4.5 GHz CPU tier and at least 10 GB allocated to the server workload, with 16 GB installed when the host also runs Windows services, monitoring and backups.
- Small test or private world: Meet the minimum, keep the mod list modest and monitor simulation and memory before inviting more players.
- Always-on group server: Prefer the recommended CPU, leave operating-system headroom and maintain multiple backups on a disk larger than the initial installation.
- Busy or heavily modded survival world: Start above the recommendation, verify the host’s sustained per-core performance and plan for additional RAM and storage as the save develops.
Because no published source supplies a player-count, mod-count or lifetime disk-growth guarantee, capacity planning should be based on observed resource use from your actual world rather than a promised number of simultaneous players.
What is the practical pre-launch checklist?
- Windows installed and updated.
- .NET Framework 4.8 installed.
- Visual C++ x64 redistributable installed.
- CPU at or above 3.2 GHz with three logical cores; 4.5 GHz is the recommended tier.
- At least 6 GB RAM; 10 GB recommended, with extra host memory for Windows and services.
- More than roughly 8 GB free disk space, plus room for saves, logs, mods and backups.
- No graphics card requirement for the headless server.
- Steam Tools or SteamCMD installation prepared; SteamCMD app ID
298740. - Firewall and port forwarding configured when hosting publicly.
- Stable public addressing and at least the Steam listing’s 5 Mbit/s multiplayer recommendation.
- Automated backups and a way to monitor CPU, RAM, disk and logs.
Frequently Asked Questions
Can I run a Space Engineers dedicated server on Linux?
The documented dedicated-server setup specifies a Windows PC with .NET Framework 4.8 and the Visual C++ x64 redistributable. If you use another operating system, you are outside that published setup path and must verify compatibility independently.
Does adding more players always require more RAM?
Not in a predictable one-player-per-gigabyte ratio. World activity, grid count, scripts, physics and mods can affect memory and simulation load more than the raw connection count, so monitor the specific save you operate.
Should the server and game client be installed on the same computer?
They do not have to be. The server is headless and can run on a separate Windows machine or VPS, while players use their own graphical clients. Separating them can prevent server simulation from competing with rendering and other desktop workloads.
How often should I back up a Space Engineers world?
Choose a schedule based on how much progress your group can afford to lose, and retain more than one generation so a corrupted or unwanted save is not your only copy. Keep backups on storage with enough free capacity rather than filling the live server volume.