# How to Allocate More RAM on Modded Minecraft Launchers

> Where to find the memory setting in every popular Minecraft launcher, and how much to give a modpack.

Source: https://www.beaconhosting.org/knowledgebase/how-to-allocate-more-ram-on-modded-minecraft-launchers
Category: Minecraft
Last updated: 2026-10-22

Modpacks need more memory than vanilla Minecraft. Each launcher has its own memory setting.

## How much to give

| Modpack | RAM for the game |
|---|---|
| Light (under 100 mods) | 4–6 GB |
| Medium (100–200 mods) | 6–8 GB |
| Heavy (200+ mods) | 8–10 GB |

Leave at least 4 GB for your computer.

## Where the setting is

| Launcher | Setting |
|---|---|
| **Minecraft Launcher** (official) | **Installations** → **⋯** on the profile → **Edit** → **More options** → **JVM arguments**: change `-Xmx2G` to e.g. `-Xmx6G` |
| **CurseForge app** | **Settings** → **Minecraft** → **Java Settings** → **Allocated Memory** |
| **Modrinth App** | **Settings** → **Default instance options** → **Memory allocated** |
| **Prism Launcher / MultiMC** | **Settings** → **Java** → **Maximum memory allocation** |
| **ATLauncher** | **Settings** → **Java/Minecraft** → **Maximum Memory/RAM** |
| **GDLauncher** | **Settings** → **Java** → **Java memory** |
| **Technic Launcher** | **Launcher Options** → **Java Settings** → **Memory** |
| **FTB App** | **Settings** → **Java** (or the instance's own settings) → memory slider |

Each launcher also has a per-instance setting if you only want more memory for one modpack. Restart the game after changing it.

> [!NOTE]
> This is the memory on **your computer**. Your Beacon server's memory is set by its plan; see [How Much RAM Does a Modded Minecraft Server Need?](/knowledgebase/modded-minecraft-server-ram).