Minecraft version
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Modrinth · Minecraft modpack
Optimization
🪽 Maximum performance, eliminates stuttering, and speeds up anything while not breaking vanilla. Sodium, Vulkan, Embeddium and Celeritas.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Optimization release matches 1.21.9?
beta file Optimization Sodium-1.21.9-2.1
Game version 1.21.9
Loader Fabric 0.17.2
Optimization Sodium-1.21.9-2.1 is a complete pack release for 1.21.9 with Fabric 0.17.2. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 8 mods in this pack file.
Pack setup
How should I set up Optimization for players and a server?
Use Optimization Sodium-1.21.9-2.1 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.
Client instance Install Optimization Sodium-1.21.9-2.1
Dedicated server setup Match Optimization Sodium-1.21.9-2.1
Pack loader Fabric 0.17.2
A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.
Referenced mods 8
Client only 3
Server only 0
Not labelled 5
These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.
What are the server requirements for Optimization?
Optimization Sodium-1.21.9-2.1 on 1.21.9. The pack contents and setup notes below stay tied to that release.
The selected pack release is Optimization Sodium-1.21.9-2.1. That file is for Minecraft 1.21.9 with Fabric 0.17.2. It contains 8 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.
About this project
What kind of pack is Optimization?
⭐ Optimization Modpack
This is a lightweight modpack focused on optimization, aiming to maximize performance. It consists only of well-chosen optimization mods, with no unnecessary mods included, which sets it apart from others
✨ Features
- Maximum performance
- Fast updates
- Pre-configured settings
- Wide selection(Sodium, Vulkan, Embeddium and Celeritas)
💽 Installation
- Use the Modrinth App or use other launchers that can install modpacks from Modrinth, such as PrismLaucher
- If you are using a official launcher, convert the .mrpack to .zip using the Modrinth Pack to Zip Converter
🧩Java and Flags
- Use Java Eclipse Temurin 25 with the following flags:
-XX:+UseZGC -XX:+UseCompactObjectHeaders - For more details, read the article
Project description from Modrinth.
Mods in Optimization Sodium-1.21.9-2.1
Open any mod on Modpacks.ch to check its files and dependencies.
c2me-fabric-mc1.21.9-0.3.5+alpha.0.43.jar SHA-1
a8b8d198cf294e3141af49aadc12229e01727ed4 · Modrinth version 9sFqnFXd · Project link unavailable Side not labelledcloth-config-20.0.148-fabric.jar SHA-1
ad95aeea20f5ea134261317e2306c202a188434e · Modrinth version otNNBWZy · Project link unavailable Side not labelledfabric-api-0.134.0+1.21.9.jar SHA-1
1f5ba40f85c96c4f8b661097d3e3f8906cc55c4f · Modrinth version iHrvVvaM · Project link unavailable Side not labelledferritecore-8.0.0-fabric.jar SHA-1
53d76354587cd1965b842fdce7cff965b5c52fe5 · Modrinth version CtMpt7Jr · Project link unavailable Side not labelledImmediatelyFast-Fabric-1.13.0+1.21.9.jar SHA-1
c3e496959c3fd861bf0c89aadbe59add5eae84f3 · Modrinth version qpCb3lJs · Project link unavailable Client onlylithium-fabric-0.19.1+mc1.21.9.jar SHA-1
1e6fd603a9a872fede100f59fcddfe193be10065 · Modrinth version iMuOZwcu · Project link unavailable Side not labelledmoreculling-fabric-1.21.9-1.5.0-beta.2.jar SHA-1
3ab31aec861c6bcade87f7e9317d1ca2ac7a19f3 · Modrinth version nASRyMbu · Project link unavailable Client onlysodium-fabric-0.7.0+mc1.21.9.jar SHA-1
78facebc00d55562922ad70888b9933522c36806 · Modrinth version AQpu5aS1 · Project link unavailable Client onlyPick your setup
Optimization by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
26.1.2
2 loader buildsMinecraft version
26.1.1
1 loader buildMinecraft version
26.1
1 loader buildMinecraft version
1.21.11
2 loader buildsMinecraft version
1.21.10
2 loader buildsMinecraft version
1.21.9
1 loader buildMinecraft version
1.21.8
2 loader buildsMinecraft version
1.21.7
2 loader buildsMinecraft version
1.21.6
2 loader buildsMinecraft version
1.21.5
2 loader buildsMinecraft version
1.21.4
2 loader buildsShowing the newest 12 of 28 game versions. Older files are in the list below.
Made local changes? Try them in a copied instance before touching a world you care about.
Recent files
Optimization versions and loaders
Fabric 0.17.21.21.98.0.312+7 beta
Fabric1.21.9 beta
Fabric1.21.9 beta
Looking for an older file? The official Modrinth project page is in Resources.
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