# How much RAM does a Minecraft server need? A practical 2026 guide

> Vanilla, Paper with plugins, light and heavy modpacks. How much memory you really need, why more isn’t always better and how to set up Java properly.

- URL: https://noveric.cc/en/blog/how-much-ram-does-a-minecraft-server-need/
- Published: 2026-09-22
- Category: Guides
- Author: The Noveric team

“How much RAM should I get?” is the question we hear most from people looking for a Minecraft server. The answer: **it depends on what you’ll run**. Here’s a practical overview.

## Quick overview

| Server type | Recommended RAM |
| --- | --- |
| Vanilla, a few friends | 2–4 GB |
| Paper + plugins, 20–50 players | 6–8 GB |
| Light modpack (up to ~100 mods) | 6–8 GB |
| Heavy modpack (ATM, RLCraft…) | 10–16 GB |
| Network with a proxy (lobby + several servers) | 12 GB or more |

## Why more RAM isn’t always better

RAM matters, but **Minecraft is mostly about the CPU**. The server’s main loop runs on a single thread – if the CPU can’t keep up, no amount of memory will save your TPS. That’s why we build on [AMD Ryzen 9 7950X3D](/en/blog/ryzen-9-7950x3d-game-servers/) CPUs.

Allocating too much can even hurt: the garbage collector occasionally has to walk a huge heap, which can cause short freezes. So we recommend a **sensible** allocation and properly tuned Java flags.

## What uses the most memory

- **Loaded chunks** – the higher the `view-distance` and the more players in different parts of the world, the more memory.
- **Mods** – every mod adds blocks, entities and logic. Heavy modpacks need a lot.
- **Plugins** – most are lightweight, but some (maps, economies with caches) can use a lot of memory.
- **Entities** – farms, animals, dropped items.

## Tips to save memory and performance

1. **Use Paper or Purpur** instead of vanilla – they’re far more optimised. More in [Paper, Purpur, Fabric or Forge?](/en/blog/paper-vs-purpur-vs-fabric-vs-forge/)
2. **Lower `simulation-distance`** – players still see far (`view-distance`), but the server only simulates the nearby area.
3. **Pre-generate the world** with a plugin like Chunky – generating chunks on the fly is expensive.
4. **Limit entities** and keep an eye on farms.
5. **Use proper JVM flags** – our control panel sets optimised flags (inspired by Aikar’s) automatically.

## Java and versions

Modern Minecraft versions (1.20.5 and newer) require **Java 21**. In our control panel the right Java version is set automatically based on the server version – nothing to worry about.

## When to upgrade

Watch the RAM graph and especially **TPS/MSPT** in the panel. If memory sits just below the limit and the garbage collector runs often, it’s time to add more. You can [upgrade your plan](/en/minecraft-hosting/) any time without losing data.

## Summary

For most community servers the sweet spot is **6–8 GB**. For modpacks, plan for 10–16 GB. And remember: a great CPU does more than extra gigabytes.