RLCraft2026-06-17 · 4 min read

How Much RAM Does an RLCraft Server Need?

RLCraft is one of the most RAM-hungry Minecraft modpacks. Lycanites Mobs, RealisticTorches, Tough As Nails and 280+ other mods keep the server's memory permanently elevated — especially mid-game.

8 GB

2–6 players, early game

Minimum. Boots and runs, but expect GC pauses on busy nights. Only viable for a very small group playing casually in the early game.

10 GB

4–10 players

Recommended for a normal group. Covers early and mid-game without constant memory pressure. This is the right starting point for most RLCraft servers.

12 GB

8–16 players

Comfortable for active RLCraft play with Lycanites spawning heavily and multiple players exploring simultaneously. Good choice for a group that plays frequently.

16 GB

12–24 players

Late-game with all dimensions active and many loaded chunks. Provides real headroom for mob-heavy nights and large builds without the server sweating.

FAQ

Does Lycanites Mobs use extra RAM?+
Yes, heavily. Lycanites Mobs keeps a large number of custom AI-active entities in memory at all times — far more than vanilla mob spawning. It is the main reason RLCraft needs significantly more RAM than other 1.12.2 packs.
What is the minimum RAM for an RLCraft server?+
8 GB is the technical minimum, but 10 GB is the real minimum if you want a group server that runs without GC pauses and memory pressure during normal play.
Does RLCraft use more RAM than vanilla Minecraft?+
Yes — roughly 3–5x more than a vanilla server of the same player count. The combination of 280+ mods, Lycanites Mobs entities and large biome generation keeps memory usage permanently elevated.
Why does RAM spike at night in RLCraft?+
Lycanites Mobs spawns massively at night and all spawned entities are kept in memory until they are killed or despawn. A busy night with multiple players exploring means hundreds of active custom mob entities at once.

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