Valheim Server RAM Guide: Vanilla, Modded & Crossplay

“How much RAM do I need?” is usually the first question anyone asks before buying a Valheim server. The short answer is 6GB for vanilla, 8GB for light mods, 10-12GB for heavy modpacks. But the real answer depends on what you’re actually doing with it - and the official recommendations don’t tell the full story.

We host a lot of Valheim servers at WinterNode, and the “right” amount of RAM tends to land higher than people expect. This guide breaks down what actually drives memory usage so you can pick a plan that fits your setup, regardless of where you host.

Quick Reference: RAM by Server Type

These are starting points based on what we see across our servers, not hard limits. Every world is different.

Why Valheim Uses More RAM Than You’d Think

Valheim’s procedural world generation is impressive, but it’s not free. The game generates terrain, vegetation, structures, and creature spawns across a massive map, and the server has to track all of it.

World age is the biggest creep. A fresh world with two players might sit comfortably at 3-4GB of actual usage. That same world two months later - with hundreds of explored chunks, built-up bases, tamed animals, and spawned enemies - will be using significantly more. This is the main reason people who start at 4GB end up upgrading: the server doesn’t get slower because of player count, it gets slower because the world grows.

Entity count adds up. Every tamed boar, every item on the ground, every structure piece is an entity the server tracks. Players who build elaborate bases with lots of storage, crafting stations, and animal pens create more server load than players who explore and move on. Four builders can be heavier than eight explorers.

Terrain modifications persist. Unlike some games where the world resets, Valheim stores every pickaxe swing and hoe flatten permanently. Heavily terraformed areas - flattened plains for building, carved-out mountains, raised-ground walls - all consume memory.

How Does Crossplay Affect RAM?

When crossplay is enabled, Valheim switches from Steam networking to PlayFab (Microsoft’s backend). This lets Xbox, Game Pass, and Steam players all connect to the same server, but it adds networking overhead.

In practice, crossplay servers use roughly 1-2GB more RAM than an equivalent Steam-only server. If you’d run vanilla at 6GB, budget 8GB with crossplay on. It’s not dramatic, but it’s enough to matter if you’re right on the edge.

How Much RAM Do Modded Servers Need?

Mods are the single biggest variable in Valheim server RAM usage. The base game is well-optimized; mods are a mixed bag.

BepInEx itself is lightweight. The mod loader adds minimal overhead. It’s what you load into it that matters.

QoL mods are usually fine. Things like inventory improvements, UI tweaks, map sharing, and building helpers rarely add more than a few hundred MB. An 8GB server handles a dozen QoL mods without breaking a sweat.

Content mods vary wildly. Mods that add new creatures, change worldgen, or introduce new biomes can significantly increase memory usage. EpicLoot, CreatureLevelAndLootControl, and similar mods that modify spawns and add item pools are the heaviest offenders.

Mod stacking compounds. Ten lightweight mods might add 500MB total. But ten mods that each add entities, spawns, and worldgen changes can easily push you from 8GB to 12GB.

When World Age Catches Up

The most common support question we get isn’t “my server crashed” - it’s “my server was fine last month and now it’s laggy.” Almost always, the answer is world growth.

Here’s what happens over time:

• Week 1: Fresh world, few explored chunks, everything snappy. Actual RAM usage well below allocation.
• Month 1: Players have explored in multiple directions, built a main base, maybe a portal network. RAM usage climbing.
• Month 3: Multiple bases, extensive exploration, tamed animals, farms, terraforming. The server is using most of its allocated RAM.

This is normal. Valheim worlds just grow, and the server needs to track more data as they do. If you’re planning a long-running world (and most Valheim groups do), factor in growth when picking your starting RAM.

Signs Your Server Needs More RAM

The server will tell you when it’s struggling:

• Rubberbanding and desync - players snap back to previous positions, hits don’t register. Run an MTR to verify it isn’t network related first.
• Long loading when connecting - the server takes 30+ seconds to load the world for joining players
• Lag spikes near bases - areas with lots of entities (animals, items, structures) cause frame drops
• Save lag - periodic stutters every 20 minutes when the world autosaves (the save file is too large to write quickly)

Before upgrading, check whether the issue is actually a misbehaving mod. A single poorly optimized mod can tank performance regardless of how much RAM you have. Try disabling recently added mods to isolate the problem.

Our Recommendation

For most Valheim groups - a handful of friends playing vanilla or with a few mods - 6-8GB is the sweet spot. It gives you room to explore, build, and add some mods without worrying about hitting limits.

If you’re running a community server with a big mod list, 10-12GB is where you want to be. And if you’re not sure, starting at 6GB and upgrading later is a perfectly valid approach.

At WinterNode, all game servers are $1.99/GB of RAM with no extra charges for CPU, storage, or features other hosts charge for separately. Get your Valheim server -> Upgrades are instant - no migration, no downtime. Start where it makes sense and scale when you need to.

If you’re new to Valheim server management, our help center has guides covering configuration, mods, and admin commands. Support is available via ticket or Discord - you’ll talk to someone who actually plays these games.