How To Allocate More RAM To Minecraft

How To Allocate More RAM To Minecraft


Martha Davis
August 20, 2021

Minecraft is one of the most popular games out there. No wonder it’s available on almost every platform from the Mac to the PC, iOS, Android, and even on most consoles.

While the game runs well on most devices, you can always get a bump in performance if you’ve got a PC with lots of unused system memory. Also, don’t get fooled by Minecraft’s seemingly simple, pixelated, and blocky visuals – as the game has a lot going on in the background. 

Despite its relatively simplistic gameplay and graphics, Minecraft is a fairly heavy application. As a result, it can be an intensive game, especially if you’re playing around with Redstone-heavy builds.

Besides, if you plan on adding mods to the mix, the standard amount of RAM needed to run the game isn’t enough. Hence, if you’re low on RAM in Minecraft, you’re bound to come across stutters and delays, or even your computer might keep freezing. 

However, the good news is that there are workarounds to allocate more RAM to Minecraft efficiently.

Not to mention, there’s not one but several ways to do it. Therefore, if you’re experiencing lags or stutters while you’re playing Minecraft, most likely it’s due to limited RAM.  

So if your game is lagging or your system’s freezing – it could be due to limited RAM. You can do so by either downgrading the game by uninstalling mods and tweaking graphic settings or increasing the amount of RAM allocated to it. 

Allocating more RAM to Minecraft was once considered a hassle, though not anymore with the release of third-party launchers. In this article, we’ll guide you on how to allocate more RAM in Minecraft on PC and for those running the game on a server. Hence, without wasting any more time, let’s dive in.

Allocating More RAM To Minecraft

Device Specification

The amount of RAM required to run Minecraft depends on your application. For example, default gameplay without any mods or add-ons requires nearly 2GB of RAM. Meanwhile, you could need up to 4GB of RAM for moderate to heavily modded gameplay.

Besides, newer versions of Minecraft – mostly 1.13+ packs are apparently more intensive and could easily need north of 6GB of RAM to run the game without lags.

It’s also worth noting that if the amount of RAM allocated explicitly for Minecraft isn’t enough to support gameplay, you’d still come across lags, despite the amount of RAM on your PC. However, you do have control over how much RAM to invest in Minecraft.

But before you start to dictate how much RAM goes into the game, you’ll need to know how much memory you have at your disposal. Checking your RAM is relatively simple. Just follow the steps below:

  • Head over to your PC’s Settings – which you can find under the Start Menu.
  • Next, click About or type about in the Search Bar and go to Device Specifications.
  • Finally, look for Installed RAM. You’ll see a number next to it that shows you the amount of RAM you have to spare. For instance, if your PC has 4GB of RAM, you’ll see around 3.88 GB of it as usable. 

How To Allocate More RAM In A Minecraft Server

Minecraft Servers

Option 1: Allocate more RAM from the default launcher

Minecraft’s original default launcher has seen some change over the years, but it still lets you allocate more RAM to the game. Here’s how to use the default launcher:

  • Open the Minecraft launcher and select whichever version you want to play, either Java or Bedrock.
  • At the top, go to tabs and select Installations, which will show a list of releases. That said, it might only show the most recent version if you haven’t set up any specific version.
  • Move the cursor over the release version you want to play, click the three white dots on the right side, and click Edit from the drop-down menu. A new screen shows up with the name of the installation, the version, alongside a few other settings.
  • Select More Options and scroll down until you see JVM Arguments
  • In the JVM Arguments field, you can change the code from -Xmx1G to Xmx3G, which means you’re now allocating 3GB of RAM to Minecraft. Similarly, if you want to allot 4GB of RAM, change the code from -Xmx1G to -Xmx4G. However, make sure you do not change any other text fields in the code apart from the number.
  • Once you’ve allocated the desired amount of RAM  by changing the code, click on the green Save button and exit. 

You’re good to go! Now, if you launch Minecraft, you’ll certainly see a performance difference immediately.

Option 2: Allocate RAM From The ATLauncher

Allocate More Rams

You might be familiar with ATLauncher, especially if you’ve downloaded mods or played Sky Factory.

The ATLauncher makes the task of setting aside more RAM even easier compared to the default launcher without having to do all the manual code-tweaking. Here’s how:

  • To begin with, make sure you have installed the latest version of Minecraft. 
  • Next, you’ll have to download and install ATLauncher.
  • Launch the ATLauncher app and click on the Settings tab on the right side menu pane.
  • Select the Java/Minecraft tab on the top navigation bar, which should show a drop-down regarding the available RAM on your device. 
  • You’ll see several options, but the one you’ll need is the second one – Maximum Memory/RAM
  • Select the amount of RAM you want to allocate (in MB, not GB) in the Maximum Memory/RAM field, or you can use arrows to change the value by 0.5GB at a time.
  • Finally, hit the save button and exit the launcher once you’re done.

And that’s it; you’ve done your job. The next time you launch Minecraft, the game will use that specific amount you allocated.

Option 3: Allocate more RAM in a Minecraft Server

The method to allocate more RAM in Minecraft when hosted on a server is slightly different. It’s a little complicated, but we’ll try to make it easy for you.

  • Open the Minecraft server directory, the folder containing the Minecraft_server.exe File. However, If you’re unsure of the location, search for “Minecraft_server” on your PC.
  • Select Home > New Item > Text Document on PC to create a text document in the server directory, and paste the following in the text document:

java -Xmx####M -Xms####M -exe Minecraft_Server.exe -o true PAUSE

  • Change #### with the value in MB that you want to allocate. For example, 1GB = 1024MB, so if you’re going to give 2GB of RAM, you’ll have to enter 2048.
  • Click File> Save As and change Save as type to All Files. Next, name the file server launcher and change the extension from .txt to .bat.
  • The File created will now be the new launcher for your Minecraft server. Just double-click it to run. Using the .bat File to launch the server will automatically allocate the specified amount of RAM.

Not that complicated, right? Now, if you launch the game, you’ll likely see a substantial improvement in performance than before.

Will Allocating More RAM Work?

Minecraft Adding RAMs

Being one of the most popular games ever, Microsoft is available for almost every platform, from PC to Mac and even iOS and Android. Due to its simple graphics, the game runs well on most devices.

That said, you can always be better, especially if you’ve got a PC with a lot of extra RAM on it. For the most part,  allocating more RAM to Minecraft will make the game perform better.

That said, there are instances in which giving too much RAM could hamper the overall system performance, as other areas of your system require RAM as well. It won’t be a significant issue if other programs aren’t running simultaneously alongside the game.

However, it’s often advised to have at least 1 GB of RAM for other areas not related to gaming. 

Suppose, despite changing your RAM settings, you do not see a performance improvement, or your system detects an inaccurate amount of memory. In that case, it could indicate other issues with your RAM.

Therefore, it’s a good idea to check for bad or corrupted system memory now and then.

 If you think you have an issue with your RAM, just replace it with a new one. Moreover, suppose you want to experience even better performance. In that case, it’s worth investing in more RAM for your system, given the fact that RAM prices are now lower than ever. 


Despite its blocky, pixelated visual appearance, Minecraft happens to be a truly exhaustive and highly detailed game.

So, if you want to enjoy the Minecraft experience in all its glory, without having to worry about why my computer keeps freezing – make sure you’ve allocated enough RAM. Once you begin to add multiple mods to your gameplay, you’ll be delighted that you did. 

So that’s it, that was our guide on how to allocate more RAM to Minecraft using different methods. Hopefully, you find the methods mentioned above and techniques handy and enjoy your favorite voxel-based game with even better performance.

Martha Davis

Martha Davis is a computer hardware specialist who works extensively in designing and manufacturing hardware devices, researching advanced computer technology. She built as a platform to share her insight on computers and PC assembly with the web. Currently, she is carrying out her research on Robotics and Computer Vision and working privately to deliver services. Martha makes sure that readers of master the basics of setting up computer components like motherboard, CPUs, and GPUs through the informative articles that she writes.