
Modrinth · Minecraft modpack
Ultra Optimized X
Trying to make Minecraft run as light as possible, this may make a good starting point...
Quick answer
Which Ultra Optimized X release should I use?
Ultra Optimized X 1.1.3 is a complete pack release for 1.21.11 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. 33 mods in this pack file.
Pack setup
How should I set up Ultra Optimized X for players and a server?
Use Ultra Optimized X 1.1.3 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.
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.
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 Ultra Optimized X?
Ultra Optimized X 1.1.3. Change the pack release and its contents or setup may change too.
The selected pack release is Ultra Optimized X 1.1.3. That file is for Minecraft 1.21.11 with Fabric 0.18.4. It contains 33 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 Ultra Optimized X?

The main purpose of this modpack is to provide a stable and useful template for building your own optimized Minecraft experience.
YOU MAY NEED TO TWEAK AND TUNE BASED ON YOUR SYSTEM
The pack works well out of the box, but for a better experience i recommend all to try out different settings and functions to see what works best. Better yet, make your own copy of the pack and change out the mods themselves to your own liking.
The focus of this pack is pure and raw performance, making sure that you will be able to run Minecraft on any system. This is ideal for laptop gamers, or gamers with low-end hardware. This was itself the inspiration for making a performance modpack, seeing as i myself want to play Minecraft on-the-go.
Project description from Modrinth.
Mods in Ultra Optimized X 1.1.3
Open any mod on Modpacks.ch to check its files and dependencies.
a502baf3cf4ecf8312e7986a88dce69836df729a · Modrinth version Tcl38ycb · Project link unavailable Server only2d40563f7e36f7a03f094031aeaacb175117928e · Modrinth version uNdfrcQ8 · Project link unavailable Side not labelled70fa28d5a7a1fdd61dd804ca6ac411750da1473f · Modrinth version Q3Dusz2j · Project link unavailable Client only8e046d07d4652abdec03b2b440dd3aa769780ab4 · Modrinth version zkTSoUJU · Project link unavailable Client onlydfbcbbd89047e312626e83efdf057956ff1e1017 · Modrinth version QdLiMUjx · Project link unavailable Side not labelled4c224606a963bce223db5b27edb4959ecf40d4ee · Modrinth version xuX40TN5 · Project link unavailable Side not labelled1688609730252ca33c2ccfa568a82afff3871215 · Modrinth version yrL6pwHZ · Project link unavailable Client only46b4caf95aa6f3fc9376f4e69bbe014cd3a7fb74 · Modrinth version K05lAbNd · Project link unavailable Client onlyc5965956edd0b280e8afe5dae8af7f15345e9669 · Modrinth version 4DbrCkoK · Project link unavailable Side not labellede2e88c0b2286148e9547eb23d95d2e30e60ad753 · Modrinth version Dx3xsUER · Project link unavailable Client onlyc2539f72941390ca9f28672bb9b6cbb6d66a91d6 · Modrinth version HaTuIXeq · Project link unavailable Client only24e3ebda918036771748ce6a965e5948e1fd4def · Modrinth version L34yYPTD · Project link unavailable Side not labelled451daa1da7470dea8c1de97708e009f840f3130d · Modrinth version qtIKi2T9 · Project link unavailable Client onlyc2e2f5e008f5bc9f401dfad8ca94909917006b65 · Modrinth version Ii0gP3D8 · Project link unavailable Side not labelledfa808166a5a266048a29cb235dd78fc24342e631 · Modrinth version 34bZL2kK · Project link unavailable Client only1edc85f646ff18d6a0be03c349241a6be7a250af · Modrinth version dV5wJGOp · Project link unavailable Client only4f17c6b7388f0afc5d24075dc2a294963f78c712 · Modrinth version QwkfUKSj · Project link unavailable Client onlyc8f0b955d47e182e27929c1240efdaa09a6d10b9 · Modrinth version 7gmpSYHk · Project link unavailable Server onlyc1f8f61d4b2fac28ab083a927c6b1338598255ed · Modrinth version gl30uZvp · Project link unavailable Side not labelled5e385b356af7a07d565655fa0dfafe6b8d1d6816 · Modrinth version 5o9ZRch5 · Project link unavailable Side not labelledb9617fa5722a8cdc321781a2b6dd97217fcfdc2a · Modrinth version OeTayxh3 · Project link unavailable Side not labelled632c7565ba0fbc033aa4574e1ae6919f277fe03b · Modrinth version JWQVh32x · Project link unavailable Client onlycaaaf33e625903028b4f6f842df50c6c01ba059b · Modrinth version kWU8mVq5 · Project link unavailable Client only4e519507bdd81ce2520da33f497a5f12469f5b10 · Modrinth version rhykGstm · Project link unavailable Side not labelled4950367323147265b272ad2156bf1a343db3f64c · Modrinth version T5pDJV1K · Project link unavailable Side not labelled9df93ab6442fa374c17fab6b5181fe2c215d9d5b · Modrinth version PV9KcrYQ · Project link unavailable Side not labelledc0a8ac43af978f8d8245bf033670944eb90d7b2e · Modrinth version 1OWNgWVR · Project link unavailable Client onlyad6034d31b84fc7131f0ca1cebd48a0d3f3abf2b · Modrinth version K6MSOY3A · Project link unavailable Client only9d76285311773bd34aef6e32fc5df558efec01de · Modrinth version X81glAaz · Project link unavailable Side not labelled3d3e2b09f4e3bdb9d689ce52f92915992fba8230 · Modrinth version l6xb49N6 · Project link unavailable Side not labelled1b879dcdf3505e7dc865428ec6d6f5b0a8074292 · Modrinth version Hl96V8qR · Project link unavailable Side not labelled8f50ecc54e802903f1744b49ed5f05f22bd71cb7 · Modrinth version ImVKd3Zp · Project link unavailable Side not labelledf99cda70903f16dd6927a276150b2762b4d5ab66 · Modrinth version pHWDw3Vc · Project link unavailable Side not labelledPick your setup
Ultra Optimized X by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.10
1 loader buildMade local changes? Try them in a copied instance before touching a world you care about.
Recent files
Ultra Optimized X versions and loaders
Looking for an older file? The official Modrinth project page is in Resources.