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Ultimately Optimized+ project artwork

Modrinth · Minecraft modpack

Ultimately Optimized+

A very highly optimized modpack made to continue the old ultimately optimized modpack

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

Quick answer

Which Ultimately Optimized+ release should I use?

Updated 4 months ago
Latest stable file Ultimately Optimized+ 1.21 Fabric
Game version 1.21
Loader Fabric 0.18.4

Ultimately Optimized+ 1.21 Fabric is a complete pack release for 1.21 with Fabric 0.18.4. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 21 mods in this pack file.

Pack setup

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

Use Ultimately Optimized+ 1.21 Fabric 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 Ultimately Optimized+ 1.21 Fabric
Dedicated server setup Match Ultimately Optimized+ 1.21 Fabric
Pack loader Fabric 0.18.4

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 21
Client only 0
Server only 0
Not labelled 21

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 Ultimately Optimized+?

Ultimately Optimized+ 1.21 Fabric. Change the pack release and its contents or setup may change too.

21 mods in this pack file

The selected pack release is Ultimately Optimized+ 1.21 Fabric. That file is for Minecraft 1.21 with Fabric 0.18.4. It contains 21 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 Ultimately Optimized+?

Ultimately Optimized+

A performance modpack made to make Minecraft run better — from 1.7.10 and 1.8.9 all the way up to the latest versions.

It’s clean. It’s fast. It just works.

What it does

  • Boosts your FPS — no complicated setup
  • Works on older PvP versions like 1.7.10 & 1.8.9
  • Supports modern versions with Sodium, Iris, Vulkan, etc.
  • Supports most (Mod) loaders such as Fabric (Sodium & Vulkan Support), Forge, Neoforge and Quilt
  • Client-side only (probably) — safe for multiplayer
  • Feels like vanilla (just smoother)
  • Shader ready if you want that extra touch

Modloaders Version Support

  • Fabric Support: 1.16.5 and Above
  • Forge Support: 1.7.10 and Above
  • NeoForge Support: 1.21.1 and Above
  • Quilt Support: 1.18.2 and Above

Why “+”?

The + stands for a multi working modpack with:

  • continuation of old project: Ultimately Optimized
  • Pre-configured settings for less lag and better stability
  • Ready to be customized or left as is

Built for:

  • PvPers who still plays and enjoys 1.8.9
  • Players on low-end hardware
  • People who hate stutter
  • Anyone who wants Minecraft to run like it should
  • But main focus is 1.16.5 and above

Want even more FPS?

Ultimately Optimized+ already boosts your performance out of the box — but if you're looking to squeeze out every last frame, we recommend adding a few extra mods (some available outside Modrinth):

  • Legacy Versions
  1. Optifine (a lil more fps boost if needed)
  • Modern Versions
  1. Coming soon...

These mods pair perfectly with the pack and can push your performance even further.

Quick FAQ

Can I add mods?
Yep. This is just the base — tweak it how you like.

Does it support shaders?
Definitely. Iris (or Optifine on old versions) has you covered.

What about servers?
Fully client-side. Join any vanilla or modded server, no problem.

Ultimately Optimized+

No bloat. No weird mods. Just better performance.

Warning: Nvidium is experimental so if you have an nvidia gpu and cant launch minecraft disable Nvidium

Project description from Modrinth.

Mods in Ultimately Optimized+ 1.21 Fabric

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

BadOptimizations-2.1.4-1.21.jar SHA-1 2338c2382537de70388a2f0f2a7b60ee0512afce · Modrinth version XYBqWKD2 · Project link unavailable Side not labelled
c2me-fabric-mc1.21-0.2.0+alpha.11.109.jar SHA-1 11dc868026e1030c9949dc4dc37958233c9eb362 · Modrinth version fEWDAK3p · Project link unavailable Side not labelled
cloth-config-15.0.140-fabric.jar SHA-1 5d82342a2df53fd6df712bfdd583a811572918a4 · Modrinth version HpMb5wGb · Project link unavailable Side not labelled
enhancedblockentities-0.10.2+1.21.jar SHA-1 d81359d77fc7c5437f3e83e519dc2f869300f0cd · Modrinth version HBZAPs3u · Project link unavailable Side not labelled
entityculling-fabric-1.8.2-mc1.21.jar SHA-1 9b21d48e4c95ebf94aac46b5fcd6a4d86fd7cfc7 · Modrinth version ivkfruZP · Project link unavailable Side not labelled
fabric-api-0.102.0+1.21.jar SHA-1 43035a1c6f506285a9910bc8038d1b1b925f8dd1 · Modrinth version oGwyXeEI · Project link unavailable Side not labelled
ferritecore-7.0.0-fabric.jar SHA-1 95b18b0f1673bbbe328812c3052cc1a921591f0f · Modrinth version wmIZ4wP4 · Project link unavailable Side not labelled
ImmediatelyFast-Fabric-1.6.10+1.21.1.jar SHA-1 ff2be016b12128fc0cd875a21a307d681edde817 · Modrinth version yHztKxR5 · Project link unavailable Side not labelled
iris-fabric-1.8.8+mc1.21.1.jar SHA-1 4e0df4011503b4b36ba69877ea7247c1a47fea00 · Modrinth version zsoi0dso · Project link unavailable Side not labelled
Ixeris-4.1.5+1.21.1-fabric.jar SHA-1 f199c1e9a59683afad44e85a2b7707ff741f61b2 · Modrinth version rHrd5Wow · Project link unavailable Side not labelled
lithium-fabric-0.15.2+mc1.21.1.jar SHA-1 72d9c51e9ece62018f290bfbbf7bbb87190cc7ed · Modrinth version Yu6L8EnD · Project link unavailable Side not labelled
modernfix-fabric-5.19.1+mc1.21.jar SHA-1 a0fd5799e698697232d75e7291276218198ea80a · Modrinth version i8GSONFm · Project link unavailable Side not labelled
modmenu-11.0.3.jar SHA-1 6213120772192040a0aeb5c7cfe330c068605b1f · Modrinth version YIfqIJ8q · Project link unavailable Side not labelled
moreculling-fabric-1.21.1-1.0.7.jar SHA-1 733ba14a0b780c76ffef5935a512aedb8e1bef60 · Modrinth version y4J2jK6V · Project link unavailable Side not labelled
placeholder-api-2.4.2+1.21.jar SHA-1 aa1b9a49f9f190dfe4825c502b150817dd2998c3 · Modrinth version U5bhVym2 · Project link unavailable Side not labelled
quick-pack-fabric-1.2.0+1.21.10.jar SHA-1 54f7be15dad9142d89d8aba52613430bfb29a591 · Modrinth version GKLuxqjp · Project link unavailable Side not labelled
reeses-sodium-options-fabric-1.8.3+mc1.21.4.jar SHA-1 c72f07a8f139f0420cbce29bd9eb29fb24db427f · Modrinth version KoUrx3jJ · Project link unavailable Side not labelled
ScalableLux-0.1.0+fabric.26c6e72-all.jar SHA-1 6e8cf20d0b334a06f30add25cf7f0dbd2cad97fa · Modrinth version Oh80nTJ5 · Project link unavailable Side not labelled
sodium-extra-fabric-0.6.0+mc1.21.1.jar SHA-1 66160fac4fdb9ddd854c5ed068fc329d24d09fd1 · Modrinth version anDafurZ · Project link unavailable Side not labelled
sodium-fabric-0.6.13+mc1.21.1.jar SHA-1 928a2598178c3a58b0638bab842f467d2e49251a · Modrinth version u1OEbNKx · Project link unavailable Side not labelled
threadtweak-fabric-0.1.4+mc1.21.jar SHA-1 03fe8b0216f373f1f61ab610f39dba2324158ee9 · Modrinth version INOJp2Dt · Project link unavailable Side not labelled

Pick your setup

Ultimately Optimized+ by Minecraft version and loader

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

27 available setups

Showing the newest 12 of 14 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

Ultimately Optimized+ versions and loaders

30 of 30 releases match

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

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