modpacks.ch by CreeperHost No ads. Just mods.
Back to modpacks
Fundamentally Optimized project artwork

Modrinth · Minecraft modpack

Fundamentally Optimized

Unlock maximum performance with a benchmark-proven modpack supporting legacy to modern Minecraft versions — all without breaking the vanilla gameplay.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Fundamentally Optimized release should I use?

Updated 1 year ago
Latest stable file FMO 1.0.0 for Fabric 1.21.9
Game version 1.21.9
Loader Fabric 0.17.2

FMO 1.0.0 for Fabric 1.21.9 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. 12 mods in this pack file.

Pack setup

How should I set up Fundamentally Optimized for players and a server?

Use FMO 1.0.0 for Fabric 1.21.9 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 FMO 1.0.0 for Fabric 1.21.9
Dedicated server setup Match FMO 1.0.0 for Fabric 1.21.9
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.

Plan the server requirements Read the Minecraft installation guide
Referenced mods 12
Client only 4
Server only 1
Not labelled 7

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 Fundamentally Optimized?

FMO 1.0.0 for Fabric 1.21.9. Change the pack release and its contents or setup may change too.

12 mods in this pack file

The selected pack release is FMO 1.0.0 for Fabric 1.21.9. That file is for Minecraft 1.21.9 with Fabric 0.17.2. It contains 12 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 Fundamentally Optimized?

Fundamentally Optimized Banner

Unlock maximum performance with a benchmark-proven modpack supporting legacy to modern Minecraft versions — all without breaking the vanilla gameplay.

🚀 Features

  • 🔄 Cross-version compatibility - From legacy 1.8.9 to modern 1.21.8
  • ⚡ Proven optimizations - Carefully curated mods with measurable performance gains
  • 🎮 Vanilla-first approach - Zero visual changes or gameplay modifications
  • 🔧 Pre-configured - With optimal settings
  • 🌐 Multiplayer compatible - All client-side optimizations safe for servers

📈 Benchmarks

Minecraft Version Modloader Benchmark
1.21.8 Fabric 0.17.2 Coming Soon!
1.8.9 Forge 11.15.1.2318 Link

❓ FAQ

Q: Will this work with my existing worlds?
A: Yes, This modpack only includes performance and optimization mods - no world generation or gameplay changes.

Q: Can I add other mods to this pack?
A: Yes, FMO is designed to balance between performance and compatibility.

Q: Why both Fabric and Forge versions?
A: Different Minecraft versions have different optimal modloaders. We provide the best option for each version.

Q: Is this safe for multiplayer?
A: Yes, All mods are client-side or singleplayer optimizations that won't affect server compatibility.

🤝 Contributing

We welcome contributions from the community! Here's how you can help:

🔍 Reporting Issues

  1. Check existing issues to avoid duplicates
  2. Use our issue templates for bug reports and feature requests
  3. Provide detailed system information and reproduction steps

🔧 Code Contributions

  1. Fork the repository
  2. Create a feature branch (ex: git checkout -b feature/amazing-optimization)
  3. Test your changes thoroughly
  4. Submit a pull request with a clear description

💡 Suggesting Mods

Have a performance mod that should be included? Open an issue with:

  • Mod name and link
  • Test results (if available)

📜 License

This project is licensed under the MIT License. Individual mods retain their respective licenses.

Project description from Modrinth.

Mods in FMO 1.0.0 for Fabric 1.21.9

Open any mod on Modpacks.ch to check its files and dependencies.

BadOptimizations-2.3.2-1.21.9.jar SHA-1 ca6ec1611a0e3814f44ec889a5c650c9699a1291 · Modrinth version x2ze97am · Project link unavailable Client only
c2me-fabric-mc1.21.9-0.3.5+alpha.0.43.jar SHA-1 a8b8d198cf294e3141af49aadc12229e01727ed4 · Modrinth version 9sFqnFXd · Project link unavailable Side not labelled
cloth-config-20.0.148-fabric.jar SHA-1 ad95aeea20f5ea134261317e2306c202a188434e · Modrinth version otNNBWZy · Project link unavailable Side not labelled
fabric-api-0.134.0+1.21.9.jar SHA-1 1f5ba40f85c96c4f8b661097d3e3f8906cc55c4f · Modrinth version iHrvVvaM · Project link unavailable Side not labelled
ferritecore-8.0.0-fabric.jar SHA-1 53d76354587cd1965b842fdce7cff965b5c52fe5 · Modrinth version CtMpt7Jr · Project link unavailable Side not labelled
ImmediatelyFast-Fabric-1.13.0+1.21.9.jar SHA-1 c3e496959c3fd861bf0c89aadbe59add5eae84f3 · Modrinth version qpCb3lJs · Project link unavailable Client only
lithium-fabric-0.19.1+mc1.21.9.jar SHA-1 1e6fd603a9a872fede100f59fcddfe193be10065 · Modrinth version iMuOZwcu · Project link unavailable Side not labelled
moreculling-fabric-1.21.9-1.5.0-beta.2.jar SHA-1 3ab31aec861c6bcade87f7e9317d1ca2ac7a19f3 · Modrinth version nASRyMbu · Project link unavailable Client only
noisium-fabric-2.7.0+mc1.21.6.jar SHA-1 e0a53dd0ccd5d1bc13798214e16f9f8a8521a335 · Modrinth version V9mMIy0f · Project link unavailable Server only
ScalableLux-0.1.6+fabric.c25518a-all.jar SHA-1 9df93ab6442fa374c17fab6b5181fe2c215d9d5b · Modrinth version PV9KcrYQ · Project link unavailable Side not labelled
sodium-fabric-0.7.0+mc1.21.9.jar SHA-1 78facebc00d55562922ad70888b9933522c36806 · Modrinth version AQpu5aS1 · Project link unavailable Client only
vmp-fabric-mc1.21.9-0.2.0+beta.7.212-all.jar SHA-1 23b9c12ab4d3badb31a1869cb193d3bef6129c49 · Modrinth version 2Cz5TBGp · Project link unavailable Side not labelled

Pick your setup

Fundamentally Optimized by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

3 available setups

Made local changes? Try them in a copied instance before touching a world you care about.

Recent files

Fundamentally Optimized versions and loaders

5 of 5 releases match

Looking for an older file? The official Modrinth project page is in Resources.