Last Updated on 1 Aug 2026
A practical starting point for a small vanilla server is two modern CPU cores, 4 GB of available RAM, SSD storage, and a stable internet connection. Larger groups, established worlds, and modded servers benefit from 6–8 GB of RAM and stronger per-core CPU performance.
Iron Gate’s dedicated-server guide covers installation, ports, Linux libraries, Docker, crossplay, saves, and backups, but it does not publish an official CPU and RAM sizing table. The specifications below are therefore practical recommendations rather than guaranteed minimums.
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Quick Valheim Server Requirements
For most private groups, start with two to four modern CPU cores, 4–6 GB of server RAM, 20–30 GB of SSD space, and at least 10 Mbps of stable upload capacity. Increase resources when players explore separate regions, construct large settlements, keep many creatures active, or install server-side mods.
| Server type | Players | CPU | RAM | Storage | Recommended use |
|---|---|---|---|---|---|
| Test server | 1–2 | 2 modern cores | 2–4 GB | 10–15 GB SSD | Setup and testing |
| Small vanilla | 2–4 | 2 fast cores | 4 GB | 20 GB SSD | Private co-op world |
| Established vanilla | 5–7 | 2–4 fast cores | 4–6 GB | 20–30 GB SSD | Regular exploration |
| Full vanilla group | 8–10 | 4 fast cores | 6 GB | 30–40 GB SSD | Long-running world |
| Modded or build-heavy | Up to 10 | 4 strong cores | 8 GB+ | 40–60 GB NVMe | Mods and large bases |
Valheim remains designed for one to ten players, and standard servers are capped at ten simultaneous players.
Player count is only one sizing factor. Five players exploring separate biomes may create more load than ten players working together in one settlement. Monitor real usage before upgrading.
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Understanding the Dedicated-Server Workload
A dedicated server keeps the world available when the usual host is offline. It manages connections, world state, permissions, saves, and multiplayer synchronization. It also processes activity around the areas where players are currently present.
Valheim uses a procedurally generated world. As players explore, build, fight, tame animals, and use objects, the server records those changes. Several players travelling in different directions can create more work because multiple regions remain active.
Iron Gate’s current server options use a default save interval of 1,800 seconds, or 30 minutes, and support automatic short- and long-interval backups.
A headless server generally does not need a gaming GPU because it does not render gameplay.
CPU Requirements
Valheim benefits more from modern per-core performance than from a large number of slow cores. A two-core processor can support a small vanilla group, while a four-core allocation provides better headroom for larger groups, separate exploration, backups, and background services.
Use these practical starting points:
- One to four players: Two modern CPU cores.
- Five to seven players: Two to four fast cores.
- Eight to ten players: Four modern cores.
- Modded or build-heavy world: Four high-performance cores.
Do not compare processors using clock speed alone. A newer CPU may complete more work per clock than an older model. On a VPS, a vCPU may represent a shared hardware thread rather than a dedicated physical core. A heavily shared four-vCPU plan can perform worse than two consistent cores on a newer processor.
Possible CPU-related symptoms include delayed interactions, slow saves, or performance drops while memory remains available. Rubber-banding can also result from packet loss, latency, or client problems, so check CPU and network metrics before upgrading.
RAM Requirements
Four gigabytes of available RAM is a sensible starting point for a small vanilla server. An established five-to-ten-player world should generally have 4–6 GB, while a modded or unusually complex server should start around 8 GB.
A server may start with 2 GB, but that leaves limited headroom for the operating system, updates, logs, backups, and temporary spikes. When physical memory runs out, Linux uses swap and Windows uses the page file. Storage-backed memory is much slower than RAM and can cause delays.
These figures apply to the server, not the entire machine. When you host and play on the same PC, the computer must also support the Valheim client, operating system, voice chat, and other applications.
Warning signs of insufficient memory include:
- Sustained usage near the limit
- Frequent swap or page-file activity
- Crashes during saves or busy sessions
- Severe slowdowns after adding mods
Extra RAM improves stability, but it does not fix weak CPU, network, storage, or client performance.
Storage and Disk Requirements
Reserve 10–20 GB for a basic Valheim server and 30–60 GB for a long-running or modded installation. The server files and a fresh world are small, but updates, logs, mods, multiple worlds, and backup generations increase storage use.
Use an SSD instead of a mechanical hard drive. NVMe storage is useful when the machine hosts multiple services or keeps many backups. Fast storage improves updates, world saves, and restoration, although it cannot compensate for poor CPU or network performance.
Keep free space available because a nearly full disk can interrupt updates, backups, or saves. Iron Gate allows administrators to configure save intervals and retained automatic backups; the current defaults include a 30-minute save interval and four automatic backups.
Keep at least one additional world copy on another machine, separate disk, or cloud storage service, and test the restoration process.
Network and Bandwidth Requirements
Stable upload capacity, low packet loss, and reasonable latency matter more than a large advertised download speed. For a small server, 10 Mbps of usable upload bandwidth is a practical target. For a busy group approaching ten players, aim for 20 Mbps or more. These are planning estimates, not official limits.
Connect the server through Ethernet whenever possible. Wi-Fi interference, overloaded routers, bufferbloat, and unstable ISP connections can cause lag even when CPU and RAM are sufficient.
With the Steam backend, the official default port range is 2456–2457. Those ports must be allowed through the firewall and forwarded through the router. Carrier-grade NAT may prevent ordinary port forwarding, requiring a public IP from the ISP or an external host.
The crossplay backend uses relay infrastructure and normally does not require port forwarding. Players can join through a public address, server list, or join code. Xbox players can join a dedicated server when crossplay is enabled, although an Xbox console cannot itself run the dedicated server.
Windows, Linux, and Docker Requirements
Windows suits administrators who prefer a graphical interface and batch-file configuration. Linux has lower background overhead and works well with systemd services, shell scripts, scheduled backups, and remote administration.
Iron Gate currently lists libatomic1, libpulse-dev, and libpulse0 as additional Linux packages. The dedicated server requires at least GLIBC 2.29 and GLIBCXX 3.4.26.
The official package also includes a Docker startup script. Docker is useful when the host has older libraries or when you want a repeatable container environment. Persist world data through a named volume or bind-mounted directory. The official script uses a valheim_server_data volume by default and allows a filesystem path instead.
- Run the server under a dedicated, unprivileged account.
- Restrict permissions on saves and configuration files.
- Back up the world before updates.
- Shut down the server cleanly.
- Keep the operating system and server software patched.
SteamCMD can automate installation and updates, but test updates carefully on modded servers.
Effects of Players, Bases, and Mods
Two servers with the same player count can require different resources. Activity patterns, world age, object counts, creatures, portals, and mods often matter more than occupied slots.
Players who stay together concentrate activity in fewer regions. Players exploring distant biomes keep more areas active and increase synchronization work. Large bases add structures, containers, lights, crafting stations, animals, and other objects. Some slowdown near a complex base may be client-side because each player’s PC must render the scene.
| Workload | Likely effect | Recommended response |
| Players stay together | Lower distributed activity | Use the standard allocation |
| Players explore separately | More active regions | Add CPU and network headroom |
| Large settlement | More objects and rendering | Check server metrics and client FPS |
| Many creatures | More entities to track | Monitor CPU during busy periods |
| BepInEx or content mods | Extra memory and processing | Start with 8 GB and test |
| Raised player cap | Unpredictable scaling | Benchmark carefully |
Valheim does not currently provide official mod support, and Iron Gate does not guarantee mod compatibility after major updates.
Maintain a mod list with versions and test updates on a copy of the world.
Self-Hosting Versus Managed Hosting
Self-hosting provides complete control over the operating system, files, networking, scripts, and backups. It can be economical when you own suitable hardware and have reliable upload bandwidth. However, you must manage electricity, ports, firewalls, updates, security, backups, and downtime.
Managed hosting supplies the public connection, hardware, control panel, and DDoS protection for groups that want continuous availability.
| Factor | Self-hosting | Managed hosting |
| Cost | Hardware, electricity, or VPS fee | Recurring subscription |
| Control | Full system access | Provider control panel |
| Networking | You manage ports and ISP limits | Provider manages connectivity |
| Availability | Depends on home power and internet | Designed for 24/7 operation |
| Backups | You configure and test them | Often included |
| Best fit | Technical users with hardware | Groups wanting convenience |
DatHost is one managed option. As verified on August 2, 2026, its Valheim plan advertises ten player slots, 16 GB DDR5 RAM, 30 GB NVMe storage, a Ryzen 9 7950X or similar processor, automatic updates and backups, DDoS protection, a world manager, one-click mods, crossplay, and a 14-day money-back guarantee. These are provider-published specifications rather than independent benchmarks.
DatHost currently lists monthly billing at €14.90, with lower effective monthly rates for six-month and annual terms. Verify pricing and specifications before purchasing because they can change.
Optimization Tips
Use monitoring instead of guessing:
- Install the server and active world on SSD or NVMe storage.
- Keep free disk space for updates and backups.
- Monitor CPU, RAM, swap, disk, latency, and packet loss.
- Use Ethernet for a home-hosted server.
- Choose a server location close to most players.
- Reduce unnecessary background services.
- Back up the world before game or mod updates.
- Keep one backup outside the server.
- Test mod updates on a copy of the world.
- Review logs after crashes or failed saves.
- Schedule disruptive maintenance when the server is empty.
- Restart when maintenance requires it, not as a permanent fix.
Change one variable at a time so you can identify the true bottleneck.
Conclusion
A small vanilla Valheim server can start with two modern CPU cores, 4 GB of available RAM, SSD storage, and a stable wired connection. For five to ten players, separate exploration, mature worlds, or large settlements, move toward four fast cores and 4–6 GB of RAM. Modded servers should usually begin with 8 GB and be tested under real load.
Self-hosting offers control and can reduce subscription costs when you already own suitable hardware. Managed hosting is more convenient when your group needs 24/7 access without handling ports, security, backups, updates, or hardware failures.
DatHost is one managed option with ten player slots, mod tools, crossplay, automated backups, and DDoS protection. Compare its current pricing and features with your home-server or VPS costs before deciding.
FAQs: Valheim Server Requirements
Yes, you can host a local Valheim server on your PC, but it’s only recommended for 1–3 players. Hosting more than that requires strong upload speeds and modern hardware. For long-term stability and public access, a dedicated host like DatHost is a much better solution. For 10 players, you should allocate at least 6–8 GB of RAM, especially if you’re using mods or expect large structures and active combat zones. DatHost offers flexible RAM plans that scale with your player base. Yes. Valheim frequently saves world data, which includes builds, exploration data, and AI states. Using a NVMe SSD ensures faster chunk loading, smooth autosaves, and minimal lag, HDDs can lead to delays and performance drops. DatHost includes NVMe SSDs on all plans. For smooth performance, you’ll need at least a dual-core CPU @ 3.0 GHz, 8–16 GB RAM, and 40–60 GB of SSD storage. More RAM and CPU power are recommended if you're using mods or hosting 10+ players. 1. Can I host a dedicated Valheim server on my own PC?
2. How much RAM does a Valheim server need for 10 players?
3. Do I really need an SSD for Valheim hosting?
4. What are the Valheim dedicated server requirements?
