promotional bannermobile promotional banner

Lithium (Fabric/NeoForge)

An optimization mod for Minecraft which improves server performance significantly.

File Details
DownloadInstall

Lithium mc1.21.1-0.15.1 for Neoforge

By2No2Name
  • R
  • Nov 21, 2025
  • 732.41 KB
  • 2.0M
  • 1.21.1
  • NeoForge

File Name

lithium-neoforge-0.15.1+mc1.21.1.jar

Supported Versions

  • 1.21.1

Curse Maven Snippet

NeoForge

implementation "curse.maven:lithium-360438:7246288"
Curse Maven does not yet support mods that have disabled 3rd party sharing

Learn more about Curse Maven

Lithium 0.15.1 for Minecraft 1.21.1 backports several bug fixes, including better compatibility with neoforge.

Make sure to take a backup of your world before using the mod and please report any bugs and mod compatibility issues at the issue tracker. You can check the description of each optimization and how to disable it when encountering a problem.

Fixes

  • Fix missing initialization of block counting in empty sections
  • Mod compatibility between raycast optimization and ponder
  • Fix NeoForge chunk load tricks compatibility
  • Fix double inventory invalidation in hopper optimization
  • Hoppers unsubscribe from block entities and double inventories when invalidated