Every Valheim hosting page sells RAM tiers, so the natural question is which one you actually need — and the honest answer starts with a fact most guides skip: a Valheim server's memory tracks your world, not your player count. Ten players in a fresh world costs less than two players in a base they have been expanding for a year. Here is what the 1.0 server really uses, measured, and how to size from it.
What we measured on the 1.0 server
We booted the 1.0 dedicated server (build l-1.0.7) on a 4GB Linux container the day it shipped:
| Moment | Memory |
|---|
| Server process started, world not yet loaded | ~1.0GB |
| Fresh world generated and idle, crossplay registered | 1.34GB |
| Restart into the same world (load instead of generate) | ~1.33GB |
So the floor is roughly 1.3GB before anyone has placed a single workbench. Hosts treat 4GB as the practical minimum, and that number is right for what it is: headroom above the floor for a world that is growing.
Where the memory goes as you play
The server keeps the whole persistent state of the world in memory: every placed piece — walls, torches, chests and what's in them — every terrain modification, every item lying on the ground, and every zone anyone has ever visited. Three things drive it up:
- Building. A large base with thousands of pieces is the single biggest cost. Big-build groups feel this most.
- Exploration. Each visited zone stays loaded in the save. A group that has sailed the whole map carries far more state than one still in the Black Forest.
- Time. Dropped items, decaying structures, and the general accumulation of a long-running world. This is why a world that ran fine for six months slowly starts to feel heavier.
Player count matters far less than people expect. Ten concurrent players add network and CPU work, but the memory difference between two and ten players in the same world is small.
Sizing guide
| Situation | RAM | Notes |
|---|
| New world, a few friends, ordinary bases | 4GB | Comfortable. Roughly 2.5GB of headroom above the idle floor |
| Full ten-player crew, big base, world played for months | 6GB | The tier most hosts recommend as the safe default for an active group |
| Sprawling mega-builds, a world you've explored end to end, or mods | 8GB | Mods in particular (item mods, world expansions) can double the state a server tracks |
If you are unsure, start at 4GB and watch. A server that sits near its memory ceiling for long stretches, saves slowly, or rubber-bands around large bases is telling you to move up a tier. On a host that resizes without a reinstall, that's a restart, not a migration.
CPU matters too — but differently
Valheim's server is largely single-threaded. A high clock speed beats many cores, and this is what determines how smooth a busy server feels once the RAM is adequate. Symptoms of CPU rather than RAM trouble: constant low-grade stutter for everyone that gets worse as more players spread out across the map, while memory sits well below the ceiling.
Disk
A world save is small — tens of megabytes even for old worlds — but the server keeps rolling backups (four by default), and the server files themselves are a little over 2GB. 20GB of disk is plenty; more only matters if you keep many worlds or long backup histories.
Does 1.0 change any of this?
Not the shape of it. Iron Gate's 1.0 notes mention faster saving and fewer stutters when zones load in and out, and they were explicit that large builds would not see a dramatic improvement. The Deep North adds a new biome to generate and explore, so a world that goes there grows like any other exploration — but there is no new memory floor.
Frequently Asked Questions
Is 4GB enough for a Valheim server?
For a new world and a small or medium group, yes. It leaves about 2.5GB of headroom above the idle floor we measured on the 1.0 server.
How much RAM for 10 players?
Ten players in a modest world run happily on 4GB. Ten players with a large base and a well-explored map want 6GB. The players themselves are not the cost; the world they have built is.
Does the server need more RAM with mods?
Usually. Item and building mods multiply what the world tracks, and mod loaders add their own overhead. Plan on 8GB for a modded server — and note that at 1.0 mods are in a fragile state anyway (details).
Can I upgrade later without losing my world?
On any decent host, yes. The world lives in the save files; more RAM is a restart with a bigger limit.
Connect's Valheim plans are sized exactly this way: Karve at 4GB for a new world, Longship at 6GB for a full crew and a real base, Drakkar at 8GB for the sprawling and the modded. All ten seats on every plan, crossplay on by default.