How to Allocate More RAM to Minecraft Launchers | Akliz

Minecraft requires a certain amount of memory to run in order to play smoothly. In some cases such as high resolution texture packs, shaderpacks, or modpacks, more memory will need to be allocated. This guide will show you how to allocate memory for each launcher.

You should only allocate memory based on how much your system can handle. Allocating more memory than what the system has available will result in crashes or instability.

Default Minecraft Launcher

1. Start the Minecraft Launcher.
2. Click on Installations at the top middle of the interface.
3. Select the installation you want to adjust, click the three dot (...) button, and click Edit.
4. In the edit menu, click More Options.
5. Locate JVM Arguments and change the value in -Xmx4G to the amount of RAM you want to allocate (e.g., -Xmx8G for 8GB).

Curseforge Launcher

RAM can also be adjusted based on what the modpack author has set for the modpack. If the author has set a limit, right-click the modpack and select Profile Options, then under Memory Settings, click Recommended by Author.

Adjust the RAM for all your Curseforge modpacks

1. Open the settings by clicking on the cogwheel in the bottom-left corner of the client.
2. Under "Game Specific," select "Minecraft."
3. Scroll down to "Java Settings" and adjust the allocated memory to your desired amount.

Adjust the RAM for a specific Curseforge modpack

1. Start the Curseforge Launcher.

2. Under My Modpacks, right-click the modpack to modify and click Profile Options.

3. Under Memory Settings, click Custom RAM Allocation and adjust the allocated memory.

   

Technic Launcher

1. Start the Technic Launcher.
2. Click on Launcher Options in the top-right corner.
3. Click on the Java Settings tab.
4. Under Memory you can adjust allocated memory.

Feed the Beast App (FTB)

Adjust the RAM for all FTB modpacks

1. Start the FTB App.

2. Click on the cogwheel icon in the left menu.

3. Click on Instance defaults.

4. Under Java, look for RAM Allocation and adjust the memory. If your system has a lot of RAM available, you can allocate more memory by clicking Allow full ram allocation.

   

Adjust the RAM for a specific FTB modpacks

1. Start the FTB App.
2. In the Library, click the profile or modpack for which you want to increase the RAM.
3. In the modpack information click on Settings.
4. Under Preference, look for RAM Allocation and to adjust your allocated memory. If your system has a lot of RAM available, you can allocate more memory by clicking Allow full ram allocation.

ATLauncher

Increase RAM allocation for all modpacks in the ATLauncher:

1. Start the ATLauncher.
2. Click Settings from the menu on the left-hand side.
3. Click on the Java/Minecraft tab.
4. Under Maximum Memory/Ram, adjust the allocated RAM.

Prism Launcher or MultiMC

Adjust RAM allocation for all instances

1. Start MultiMC or Prism Launcher
2. Click on Settings from the top menu.
3. Click on the Java tab.
4. Adjust the Maximum memory allocation to increase the allocated RAM.

Adjust RAM allocation for specific instances

1. Start MultiMC or Prism Launcher

2. Click on the instance you would like to modify and click Edit.

3. Click on Settings in the left menu.

4. Check the Memory button and adjut the Maximum memory allocation to increase the allocated RAM.