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ThuliumMinecraft mod for 1.20.1

A lightweight performance mod that boosts FPS by optimizing Minecraft's garbage collector, sound engine, event bus, profiler and render loop without touching entities, blocks or world generation

newest supported 1.20.1Performance
Latest version
thulium-1.0.5.jar
Minecraft
1.20.1
Java
Java 17+
Loaders
Forge, Fabric
Licence
not stated
Downloads
114.1k
Updated
2 mo ago
Available on
CurseForge

Minecraft versions

Every version Thulium declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.20.1Forge, Fabric17+declared12 Jun 2023

Download

From Thulium’s own host. Nothing is re-hosted here.

thulium-1.0.5.jarrelease10 Jul 2026

thulium-1.0.5.jar · 0.0 MB · for 1.20.1

Download latest
f5153f1fa4fc…
Older versions4
  • thuliumfabric-1.0.0.jar2 Mar 20261.20.10.0 MB11 downloads248b19b8f86b…Get
  • thulium-1.0.4.jar16 Feb 20261.20.10.0 MB110 downloads3264c25905cf…Get
  • thulium-1.0.1.jar16 Feb 20261.20.10.0 MB16 downloads09e8028d301b…Get
  • thulium-1.0.0.jar15 Feb 20261.20.10.0 MB74 downloads8221a020da0c…Get

Frequently asked

Does Thulium work on Minecraft 1.20.1?

Yes. 1.20.1 is the newest Minecraft version Thulium declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which platform or loader does Thulium support?

Forge, Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Thulium?

On the newest Minecraft version it supports, Java 17 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

How do I install Thulium?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Thulium safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 2 mo ago against CurseForge. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .