The honest answer is "it depends on what you run", but there are solid rules of thumb. Here is how to size a **Minecraft server** for vanilla, plugins and modpacks without overpaying.
The short answer
A small vanilla server for a few friends runs well on 2-4 GB of RAM. A public server with plugins usually wants 6-8 GB. Large modpacks often need 8-16 GB or more, even for a handful of players.
What actually uses the memory
- Loaded chunks: every player loads the area around them, and more players mean more loaded world.
- Entities and redstone: mob farms, hoppers and big contraptions cost memory and CPU every tick.
- Plugins and mods: each one adds code and data; modded blocks and mobs are much heavier than vanilla.
- Minecraft version: newer versions carry more base overhead (taller worlds, newer lighting and mob AI).
RAM by server type
- Vanilla, 1-10 players: 2-4 GB.
- Paper or Spigot with plugins, 10-50 players: 4-8 GB.
- Large public server, 50-100 players: 8-12 GB, and watch tick rate.
- Forge or Fabric modpack: 8-16 GB or more depending on the pack.
CPU matters as much as RAM
The Minecraft main thread does most of the work on a single core, so single-core speed decides how smooth the server feels. A plan with fast cores beats one with more RAM and slower cores. Past roughly 100 players a single world is usually limited by tick rate, not memory; a multi-server network is the answer at that size.
Do not over-allocate
Giving Java far more memory than it needs can make garbage collection pauses longer. Allocate what the server needs plus some headroom, watch the console, and upgrade only if memory pressure shows up.
Pick a plan and start
Our Minecraft server hosting page lists plans by RAM and includes a plan finder that suggests a size from player count, mods and version. You can upgrade later, and daily backups protect the world while you experiment.
Size for the players and mods you have today, not the ones you hope for. Upgrading is easy; paying for idle memory is not.
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