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How to Allocate more RAM to your Minecraft Game

A step-by-step guide on how to allocate more RAM to your Minecraft game.

Last updated on  Feb 13, 2026

Allocating RAM to your Minecraft instance can significantly improve the gameplay experience, giving you a smoother and lag-free experience. In this guide, we will be covering: how to allocate more RAM to your default Minecraft launcher, the CurseForge App, and the Modrinth App.

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You can download the CurseForge App or Modrinth App from the following links:
- https://www.curseforge.com/download/app
- https://modrinth.com/app

Default Minecraft Launcher

  1. Open your Minecraft launcher and go to the Installations -tab.
  1. Click the ... → edit next to the installation you want to allocate more RAM to. This should be the main one you use to play Minecraft with.
  1. Click on MORE OPTIONS.
  1. From here, change the -Xmx2G flag number to whatever number you want to allocate to that installation. For reference, 2 is 2 GB of RAM.

    The amount you can allocate depends on how much RAM your computer has. The recommended range for this is 4 - 8 GB.

Modrinth App

  1. Open up the Modrinth App and go to your instance’s settings.
  1. Go to the Java and memory tab, and check the Custom memory allocation box. From here, you can slide the slider to allocate as much memory as you have.

CurseForge App

  1. Open the CurseForge App, and go to your instance’s Profile Options under the three dots.
  1. From here check the Custom RAM Allocation option. After that, slide the slider to how much RAM you want to allocate to the instance.
  1. After you have allocated the desired amount of RAM, click Done.

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