How to Allocate More RAM to Your Minecraft Launchers (2023)

How to Allocate More RAM to Minecraft Launcher - ScalaCube

Even in vanilla Minecraft, a lack of RAM can be a huge nuisance. If your computer’s short in the memory department, allocating more RAM to the Minecraft launcher can help to improve your experience and make the game run smoother.

And in this guide, we’ll teach you how.

What Is The Ideal Size of RAM for Minecraft?

Sure thing! Here's the revised text without the references:

The answer is not straight forward. It depends on quite a few things.

First, we should talk about the basics. 2GB of RAM is a good start. This is okay for beginners, or if your mods aren't too heavy. However, if your computer is newer (around 4 years or younger), giving Minecraft 4GB of RAM would be better. This way, everything runs smoother. It's like greasing a wheel, it makes things roll without a hitch.

What about playing with friends? Or hosting a server? You might need more RAM. As a guide, try setting aside 0.1GB to 0.2GB of RAM for each player. Then, add an extra 1 to 2 GB for the server itself.

So, if it's you and 9 friends (that's 10 players in total), you'd use between 2GB and 4GB of RAM. But hold on! This changes with mods. Like toys in a toy box. The more you have, the bigger the box you need. More complex mods may need more RAM.

Want to give Minecraft even more RAM? You can do that!

You'll be tweaking something called JVM. But remember: don't bite off more than you can chew. Giving Minecraft too much RAM can slow down your computer.

You've got to try a few on to see what fits. The best fit will depend on your game style, how many players, what mods you are using, and how the game performs.

How To Allocate More Ram into Minecraft

Default Minecraft Launcher

Open Minecraft launcher.
Go to the "Installations" tab.

How to Allocate More RAM to Your Minecraft Launchers (1)

Select the version of Minecraft you would like to change the RAM allocation to, and click on the 3 dots and click "Edit".

How to Allocate More RAM to Your Minecraft Launchers (2)

Click on "More options" on the bottom.

How to Allocate More RAM to Your Minecraft Launchers (3)

Locate "JVM ARGUMENTS" and find "-Xmx2G".
"2G" represents how much RAM is allocated to the client.
In this case, we would change it from "-Xmx2G" to "-Xmx6G".
Click "Save".

How to Allocate More RAM to Your Minecraft Launchers (4)

Technic launcher

Open Technic launcher.
Click on "Launcher Options" on the upper right.

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Make your way to "Java Settings" and locate "Memory".

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In the memory dropdown, change it to a setting required by you and launch the game.

FTB Launcher

Open FTB Launcher.
Select the modpack you would like to change the RAM requirement for and click on the 3 dots.

How to Allocate More RAM to Your Minecraft Launchers (7)

Go to the "Settings" tab.
Select "Instance memory" and use the slider to select how much RAM you would like this modpack to use.

How to Allocate More RAM to Your Minecraft Launchers (8)

Once this is done, you can now open the modpack.


Open ATLauncher.
Click on "Settings" on the bottom right of the launcher.
Go to the "Java/Minecraft" tab.
Locate "Maximum Memory/Ram".
Change it to your desired amount and click "Save".

How to Allocate More RAM to Your Minecraft Launchers (9)

Voidswrath launcher

Open the Voidswrath Launcher
Locate "Options" on the top right.
Select the "Memory size to allocate to Minecraft" dropdown menu and select your desired amount.

How to Allocate More RAM to Your Minecraft Launchers (10)

Congratulations! You now know How to Allocate More Ram to Your Minecraft Launchers.


Why is my Minecraft running slow?
Several factors can contribute to Minecraft's slow performance. If you are experiencing slow performance, you may need to upgrade your computer's hardware, graphics, and game settings. Low RAM can also contribute to slow performance, so allocating more RAM to the game can help.

How much RAM should I allocate to Minecraft?
The amount of RAM you should allocate to Minecraft depends on the gameplay you’re looking for. For example, if you plan to play mods, you'll need more RAM than if you're playing vanilla. For average gameplay, 2GB of RAM should be enough. If you are running resource-intensive mods, though, you should allocate at least 4GB of RAM to the game.

Where can I find my Minecraft launcher?
Your Minecraft launcher is typically located in your “Program Files” directory under your C drive. If you are using a Mac, you will find it in the “Applications” folder. Launchers such as Technic or FTB are located in the directory where they were first installed.

How do I know if I have allocated enough RAM to my Minecraft launcher?
The best way to check if you have allocated enough RAM to your Minecraft launcher is to monitor your FPS while playing the game. If you notice your game stuttering or running slow, your RAM allocation may be too low. You may also want to try increasing the amount of RAM allocated to the launcher and seeing if that improves performance.

Why is allocating RAM to your Minecraft launcher important?
Allocating more RAM to your Minecraft launcher is crucial because it can improve game performance. More RAM helps to reduce stuttering, minimize lag, and even improve FPS. This, in turn, can lead to a more enjoyable gaming experience.

How do I know how much RAM my computer has?
You can find out how much RAM your computer has by checking your “System Information.” On a Windows PC, you can do this by right-clicking on “My Computer” and selecting “Properties.”
You’ll find RAM info here. On a Mac, you can check your system information by clicking “About this Mac,” located in the Apple menu. You’ll find all essential system information here, including RAM.

How do I ensure I don’t allocate too much RAM to my Minecraft launcher?
It’s vital to ensure you don’t allocate too much RAM to your Minecraft launcher, as this can lead to unwanted issues with your computer. You should check the system specifications of your computer and ensure that you do not allocate more RAM than your system can handle. It’s also important to note that allocating too much RAM to Minecraft can lead to worse performance as the game may struggle to utilize all the RAM.

Are there other ways to improve performance besides adding more RAM to my system?
Yes, there are several other ways to improve performance in Minecraft, both in-game performance and on the technical side. On the technical side, you can optimize your game's graphics settings and update the drivers. You can reduce the number of mods and resource packs installed on the in-game side. You can also reduce the number of entities and active plugins. All of these can help improve your experience with the game.

How to get more RAM?
If you feel like your system isn't powerful enough to run Minecraft, you can try upgrading your RAM. Most modern PCs allow you to upgrade your RAM, and adding more RAM is often the most cost-effective way of improving performance. If you're running on a laptop, you may need to replace the entire laptop to upgrade the RAM, so it's best to check your hardware manual for compatibility and instructions before attempting any upgrades.

Run a High-RAM Server With ScalaCube

If you've added more RAM to your Minecraft launcher, you may still need more resources for lag-free gaming.

So, if you’re looking to play with more people, run mods or resource packs, or even reduce lag and enhance your gameplay, get a high-RAM server from ScalaCube. Our servers give you complete control over your hardware and software and let you customize your experience.

Aside from helping you configure the server settings, our platform helps you manage your game's performance so you can play smoothly and enjoyably.

So don’t wait for my lag to crop up—get a high-RAM server from ScalaCube now and start playing your favorite game the way it was meant to be.


  1. Select a launcher that requires more resources
  2. Go to their shown settings and allocate more resources
  3. Connect to your Minecraft server
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