How much RAM does a Minecraft server need? (2026 guide)
By the MACO Core team · · 2 min read
Short answer: most small Minecraft servers run well on 2 to 4 GB of RAM. Plugin servers for 10 to 20 players want 4 to 6 GB. Modpacks need 6 to 12 GB or more, depending on the pack. RAM is only half the story, though: Minecraft runs most of its work on one CPU core, so a fast core matters as much as the amount of memory.
RAM by server type and player count
| Server type | Players | RAM we recommend |
|---|---|---|
| Vanilla or Paper, just friends | 1 to 5 | 2 GB |
| Paper with a few plugins | 5 to 15 | 4 GB |
| Paper with many plugins, small community | 15 to 30 | 6 GB |
| Light modpack (Fabric or Forge, under ~100 mods) | 2 to 10 | 6 GB |
| Big modpack (200+ mods, e.g. kitchen-sink packs) | 2 to 10 | 8 to 12 GB |
| Large community or network | 30+ | 12 to 16 GB+ |
These are starting points, not hard rules. A huge explored world, high view distance or lots of farms and redstone can push usage up.
What actually uses the RAM?
- Loaded chunks. Every player keeps the area around them loaded. More players spread out means more chunks in memory.
- View and simulation distance. These settings decide how many chunks each player loads. Lowering
view-distancefrom 10 to 8 can save a lot of memory. - Mods and plugins. Each one adds its own data. Modpacks with hundreds of mods can use 4 GB before a single player joins.
- Entities. Mob farms, item drops and villagers all live in memory.
Why more RAM is not always better
Giving a server far more RAM than it needs can make it worse, not better. Java's garbage collector has more memory to clean, which can cause longer pauses that feel like lag spikes. Pick what your server needs plus some headroom, and upgrade when you see memory consistently near the limit.
Signs your server needs more RAM
- The console shows
java.lang.OutOfMemoryError. - The server crashes or restarts when several players explore at once.
- Memory usage sits close to 100% all the time, even with few players online.
If the server lags but memory is fine, the problem is usually CPU (too many entities, redstone or chunk generation), not RAM.
CPU matters as much as RAM
Minecraft's main game loop runs on a single thread. That is why a server with a modern, high-clock CPU will hold 20 TPS (ticks per second, the smooth target) where an older server with more cores struggles. When comparing hosts, check the CPU model, not just the gigabytes.
All MACO Core game servers run on AMD Ryzen 9 9950X3D cores, one of the fastest single-thread CPUs available.
Quick recommendations
- Just you and a few friends, vanilla or Paper: 2 GB.
- A plugin server for a growing community: 4 to 6 GB.
- A modpack with friends: 6 to 8 GB, more for very large packs.
- Not sure? Start smaller and move up when your server needs it.
FAQ
Is 2 GB enough for a Minecraft server? Yes, for vanilla or Paper with up to about 5 players and modest view distance.
How much RAM do I need for a modded Minecraft server? Usually 6 GB for light packs and 8 to 12 GB for big packs with 200 or more mods.
Does more RAM reduce lag? Only if the server is running out of memory. Most lag comes from CPU load, so a fast CPU and sensible settings matter more once you have enough RAM.