How much RAM should I allocate to Minecraft?

If you don’t have enough RAM, your Minecraft server will not work correctly. The more players and mods you add to your server, your RAM allocation becomes more critical. There is a recommended minimum for every Minecraft build, but that doesn’t mean you have to stick to the lowest point. So read this article to know how much RAM should I allocate to Minecraft?

Ram And Minecraft

RAM is an essential consideration in determining the size of the world, considering its structure, mods, and players. The more changes and the larger the size, the more RAM the server needs. If you don’t have enough RAM, your server may be delayed or perform poorly. It also makes it more difficult for multiple players to exist simultaneously.

Amount Of Ram For The Minecraft Server

The professional Minecraft hosting plan shows a 2GB RAM base for a minimal world with 10 plugins and 10 players. The following is an overview of the RAM required depending on the server and mod.

15 Players and 25 mods → At least 3GB of RAM.

25 players and 40 mods → At least 4GB of RAM. 

30 players and 45 mods → At least 5GB of RAM. 

40 players and 50 mods → At least 6GB of RAM. 

90 players and 50 mods → At least 8GB of RAM. 

150 players and 50 mods → A maximum size of 100GB require at least 10GB of RAM.

You can see that a server with more players needs more RAM without increasing the mods. Conversely, more RAM is required even in a large world with the same player and mods. Hence, it means that as your world size, player base, and mod needs grow, you will need to adjust your RAM.

How To Allocate More Ram To Your Minecraft 1.14.4

Whether you’re renting a server or managing a server, allocating memory is easy. Of course, if you’re renting a server, all you have to do is go to the control panel and update your plan to get more RAM. As your need grows, it will cost more. However, if you manage your server, it is helpful to know how to change the RAM allocation.

Ram Allocation In Java Edition

RAM can be changed directly with the Java Edition launcher. If you are using a different launcher or have problems with the default launcher, you can switch to a different one.

  • Open the Minecraft Launcher.
  • Click on Installations.
How To Allocate More Ram To Your Minecraft
  • Click the button with the three dots for the installation you want to manage.
  • Click More Options.
  • Examine the JVM argument line.
  • Change the number to “Xmx6G” to include the amount of RAM  to allocate. For example,  to use 6GB of RAM, you need to display “Xmx6G”.

You need to manage each installation individually.

All third-party launcher programs have  JVM arguments in different places, but the general procedure is the same as changing them in Java Edition. Look for Settings or Edit Profile. These two places may have  JVM arguments that you can tweak to give Minecraft more RAM.

Ram Allocation On Forge Server

You can edit the text document for your Forge Server installation to change the amount of memory allocated to Minecraft

  • Open the folder that contains the Forge server installation. 
  • Open the “Launch” text document.
  • Make sure the Forge installation matches the  .jar installation described in the documentation.
  • At the Xmx command line, enter the amount of RAM  to use.
  • Save the document.
  • Use the “Launch” file option to start your Forge server.

How To Allocate More Ram To Minecraft Using Twitch

Twitch Launcher is another way to start a Minecraft game. You can also use it to free up more RAM quickly.

  • Go to the Minecraft tab in Settings.
  • Click the assigned memory balloon.
  • Drag it to the amount of memory you want to allocate to Minecraft.

It’s straightforward. As soon as you open the game with this launcher, you play with the amount of RAM you have allocated.

Why Can’t I Allocate More Ram To Minecraft?

You may have a hard time allocating more RAM to Minecraft. If you encounter this issue,  you may not have the Java SE Development Kit for Windows x64. It will not work if you are using the 32-bit version.  You may also be using the Windows 10 edition of Minecraft. Windows automatically manages the memory for that particular game, so you don’t need to change it. 

Can I Allocate More Than 12GB Of Ram To Minecraft?

Professional hosts provide up to 15GB so that you can add more than 12GB of RAM to Minecraft. You always need at least 2GB of RAM to run Minecraft. However,  if you set the minimum amount to 4GB instead, most people will get better results. Even when working with limited RAM, the performance gains are so remarkable that they are worth it.

Why does Minecraft keep resetting  RAM allocations?

My game was at a loss with 4GB of RAM allocation, so I doubled the Minecraft Launcher window allocation to 8GB, and it’s running perfectly. However, when I return to play the game, for example, after a few hours, the RAM allocation has been reset to the default of 4GB, and I need to continue making changes.

Why doesn’t Minecraft use full memory?  The allocation determines only the maximum value. However, if Minecraft doesn’t consume that much memory, it doesn’t use that much memory. When you load a regular Minecraft game,  only one chunk is loaded, and when you leave the loaded chunk,  unused space is unloaded.

Tips For Adding Ram To Minecraft

Make sure you have enough left to run other programs and processes that you may be using. When playing on the same computer, you mustn’t allocate enough RAM, as the graphics may not be fluid if you run out of memory.

You don’t have to stick to the configured amount of RAM. You can try switching to different amounts at different times. If your player spikes, you can shut it down quickly and allocate more RAM to keep it running smoothly when the population is substantial. If few people have successfully turned it on, you can revert the RAM. Adding too much RAM can delay the server and cause performance issues.


If you`re playing Minecraft without mods, 3GB should be plenty. If you’re using mods, you should probably allocate 4–5GB and close other programs: you’re going to end up using most of your physical RAM, and you want to avoid Minecraft using virtual memory. Don’t use modpacks with lots of mods on a computer with only 8GB; you’ll experience poor performance.  If practical, consider buying more RAM: it’s a reasonably cheap component, easy to install, and an easy way to boost your computer’s performance in areas where virtual memory was a bottleneck. Avoid allocating RAM needlessly to Minecraft, as this can produce “spikes” of lag when the Java garbage collector runs and cleans up memory no longer being used; by giving it more RAM, there’s more “garbage” to collect, and it takes longer.

Arslan Ashraf
Arslan Ashraf is Computer Expert. He developed his passion for reviewing the latest tech products. He likes to review every single piece of Hardware. If you have any questions related to Tech Products. He'll be happy to answer you.