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Valheim server requirements

What a Valheim server needs in CPU, memory, disk and bandwidth, by player count. Change the numbers for your own server; the sources are listed below.

Mods (BepInEx)
Assumptions

What it needs

CPU
4 coresSingle-thread heavy: clock speed matters more than core count.
Memory
4 GB
NVMe storage
5 GB
Traffic per month
170 GB
Busiest upload
1.5 Mbit/s

On Clouduxe

Room to grow

VDS FusionCore

4 dedicated cores, 16 GB DDR5, 200 GB NVMe, 10 TB traffic

₹9,940$104.49/mo

  • 8 GB more memory, 120 GB more NVMe.
  • Dedicated cores: your server never waits for a core another customer is using.
  • Headroom for busy evenings, more players, and the mods and updates you add later.
Deploy FusionCoreAbout FusionCore

By player count. Without mods (bepinex); each step up in the calculator adds memory, disk and sometimes a core.

PlayersCPUMemoryNVMeTraffic a monthFits your loadRoom to grow
24 cores3.5 GB5 GB34 GBVPS GrowthVDS FusionCore
44 cores3.5 GB5 GB68 GBVPS GrowthVDS FusionCore
64 cores4 GB5 GB102 GBVPS GrowthVDS FusionCore
84 cores4 GB5 GB136 GBVPS GrowthVDS FusionCore
104 cores4 GB5 GB170 GBVPS GrowthVDS FusionCore

Traffic assumes 35% of the player cap online on average across the month; change it under Assumptions in the calculator.

Where the numbers come from. Published figures first, then how the calculator turns them into a model.

Published requirements

How the model is built

Memory
3 GB plus 100 MB per player. Developer (Iron Gate) publishes no RAM spec. Community sizing guidance: a fresh vanilla world starts around 3 GB; a full 10-player vanilla server settles around 4 GB. baseGB=3 plus 100MB per player reaches 4GB at 10 players, matching that anchor. Actual usage tracks world size/exploration more than player count.
CPU
4 cores, one more for every 10 players. World generation and simulation are CPU-heavy and not well multithreaded, so clock speed matters more than core count. A quad-core (i5-class) covers the full 10-player vanilla cap, per GameRevolution's self-hosted spec.
Disk
2 GB for the server plus 3 GB for saves and backups. Server binary needs about 2GB (GameRevolution and Iron Gate setup docs). World save files are small individually but grow with exploration and backups; 3GB extra covers multiple world saves/backups.
Bandwidth
150 kbit/s of upload per player. Iron Gate's official guide gives no bandwidth figure. IONOS's setup guide cites roughly 1-2 Mbit/s upload as sufficient for a server; spread across a full 10-player server that is about 150kbps per connected player.
Mods (BepInEx)
Memory times 1.5 for some and 2 for heavy; a heavy load also adds a core.

Iron Gate's official dedicated server guide covers setup and ports only; it does not publish CPU or RAM requirements. Hardware figures here are derived from a widely used hosting guide and community sizing guidance, not the developer. Vanilla max players is a hard-coded 10.

Before you set it up. The ports it listens on and what the guides say drives its load.

Ports

PortProtocolUsed for
2456UDPgame
2457UDPquery

Game server hosting: every game we size, the protection each one gets, and the plan for it.

DDoS protection is on every Clouduxe plan. How Prism handles game traffic.

What drives the load

  • RAM usage tracks world size and how much has been explored more than raw player count; an old, heavily explored world needs more memory than a fresh one with the same player count.
  • The dedicated server process is not heavily multithreaded, so CPU clock speed matters more than core count.
  • Vanilla servers are hard-capped at 10 concurrent players; going higher requires a server-side mod such as MaxPlayerCount, which is non-standard and not officially supported.
  • Iron Gate (the developer) does not publish official CPU or RAM requirements for the dedicated server binary, only setup instructions; the figures here come from widely used hosting guides and community sizing data.

Valheim server questions

Talk to us
How much RAM does a Valheim server need?

About 3.5 GB for 2 players and 4 GB for 10, before mods (bepinex). Developer (Iron Gate) publishes no RAM spec. Community sizing guidance: a fresh vanilla world starts around 3 GB; a full 10-player vanilla server settles around 4 GB. baseGB=3 plus 100MB per player reaches 4GB at 10 players, matching that anchor. Actual usage tracks world size/exploration more than player count.

How many CPU cores does a Valheim server need?

4 for 2 players, 4 for 10. The server is single-thread heavy, so the clock speed of one core matters more than how many cores it has. World generation and simulation are CPU-heavy and not well multithreaded, so clock speed matters more than core count. A quad-core (i5-class) covers the full 10-player vanilla cap, per GameRevolution's self-hosted spec.

How much bandwidth does a Valheim server use?

About 150 kbit/s of upload per connected player, so 1.5 Mbit/s with 10 players online and about 170 GB a month if 35% of that cap is online on average. Iron Gate's official guide gives no bandwidth figure. IONOS's setup guide cites roughly 1-2 Mbit/s upload as sufficient for a server; spread across a full 10-player server that is about 150kbps per connected player.

Which Clouduxe plan should I pick for Valheim?

For 10 players, VPS Growth fits the load and VDS FusionCore leaves room to grow. Every plan includes DDoS protection: 17 Tbps of upstream mitigation plus Clouduxe Prism on the server.

Other games. The same calculator, sized from each game's own documentation.

All calculators

Host Valheim on VPS Growth.

Sized for 10 players, with DDoS protection included. Or talk to us about a bigger server.

See VPS GrowthSize another server