Minecraft version
Back to modpacks 
Modrinth · Minecraft modpack
Classic Optimized
Classic Optimized is a lightweight, performance-focused Minecraft modpack designed to deliver maximum FPS and ultra-smooth gameplay without unnecessary mods. Perfect for low-end PCs and players who just want pure performance.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Classic Optimized release should I use?
Latest stable file Classic Optimized 1.0
Game version 1.21.10
Loader Fabric 0.18.3
Classic Optimized 1.0 is a complete pack release for 1.21.10 with Fabric 0.18.3. 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 Classic Optimized for players and a server?
Use Classic Optimized 1.0 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 Classic Optimized 1.0
Dedicated server setup Match Classic Optimized 1.0
Pack loader Fabric 0.18.3
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 21
Client only 13
Server only 0
Not labelled 8
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 Classic Optimized?
Classic Optimized 1.0. Change the pack release and its contents or setup may change too.
The selected pack release is Classic Optimized 1.0. That file is for Minecraft 1.21.10 with Fabric 0.18.3. 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 Classic Optimized?
Classic Optimized is a carefully optimized Minecraft modpack built for players who want the best possible performance without sacrificing stability.
This modpack focuses on:
🚀 High FPS boost using top-tier optimization mods like Sodium
⚡ Fast loading times & smooth gameplay
🧩 Minimal & essential mods only (no bloat)
💻 Perfect for low-end and mid-range PCs
Whether you're exploring, building, or playing survival, Classic Optimized ensures a lag-free experience with consistent performance.
Project description from Modrinth.
Mods in Classic Optimized 1.0
Open any mod on Modpacks.ch to check its files and dependencies.
AsyncParticles-Lite-0.7.1-alpha+1.21.10.jar SHA-1
1e321d089be1d98c72304f0df2ea5d570455d550 · Modrinth version Qo0vedFK · Project link unavailable Client onlybbe-1.2.0+1.21.10.jar SHA-1
bd12066547d1f791e905fb29356f0601b4c2f57a · Modrinth version r4ORW6Zs · Project link unavailable Client onlyc2me-fabric-mc1.21.10-0.3.6+alpha.0.9.jar SHA-1
dbe0d68c88ad4a9c76f9892047258766ef12b294 · Modrinth version 2EKX8Hiv · Project link unavailable Side not labelledcloth-config-20.0.149-fabric.jar SHA-1
c86e380bdac24e4ecdd148558e9d4ddf32c86059 · Modrinth version qMxkrrmq · Project link unavailable Side not labelledcontinuity-3.0.1-beta.2+1.21.10.jar SHA-1
071e6ceddabeaf0277c8643d611f1aa0ed167be3 · Modrinth version 7JbPpQnu · Project link unavailable Client onlyentityculling-fabric-1.9.4-mc1.21.10.jar SHA-1
9775a63f2dd9b32a6f4d4bd90ba4d7e5cfe63cc0 · Modrinth version s6K5qu4u · Project link unavailable Client onlyfabric-api-0.138.4+1.21.10.jar SHA-1
0345c20b71007521a25b393091adeb45328d7c57 · Modrinth version tV4Gc0Zo · Project link unavailable Side not labelledfabric-language-kotlin-1.13.8+kotlin.2.3.0.jar SHA-1
05fe02fe61232c4ddea4059e8103281424d5a2bd · Modrinth version N6D3uiZF · Project link unavailable Side not labelledferritecore-8.0.2-fabric.jar SHA-1
5ea50634ed19a5e10acb46258bab0c1ee20f64ca · Modrinth version MGoveONm · Project link unavailable Side not labelledImmediatelyFast-Fabric-1.13.4+1.21.10.jar SHA-1
a6fc016add2a6cbb601f3d58c5981257c9486771 · Modrinth version aazFNTEy · Project link unavailable Client onlyiris-fabric-1.9.7+mc1.21.10.jar SHA-1
f96d48791a372edb0fa3adfc80848c4f27eae737 · Modrinth version a98UkgML · Project link unavailable Client onlylithium-fabric-0.20.1+mc1.21.10.jar SHA-1
7d44f5da9c690bbf1bd6d65c1acc81db5cf7f8c6 · Modrinth version NsswKiwi · Project link unavailable Side not labelledmodernfix-fabric-latest.jar SHA-1
1e5c6a097293ca54b590bdd1abf1c038030845af · Modrinth version EGQnhQyx · Project link unavailable Side not labelledmodmenu-16.0.0-rc.1.jar SHA-1
c927187d11cb6db2d3daad2a24899f1a70a1618f · Modrinth version e0mxOOIE · Project link unavailable Client onlymoreculling-fabric-1.21.9-1.5.0-beta.2.jar SHA-1
3ab31aec861c6bcade87f7e9317d1ca2ac7a19f3 · Modrinth version nASRyMbu · Project link unavailable Client onlyreeses-sodium-options-fabric-1.8.6+mc1.21.10.jar SHA-1
55db55556d81a3b68f8f1d08a74ab00c127f3886 · Modrinth version nUGhyPwZ · Project link unavailable Client onlyResourcify (1.21.10-fabric)-1.7.5.jar SHA-1
79c93c97b6d63bd08fed7858ccb23913f8134e05 · Modrinth version 3LsvE4BP · Project link unavailable Client onlysodium-extra-fabric-0.7.1+mc1.21.10.jar SHA-1
c5243648eda711f87febe22f0ecbe86323541b1c · Modrinth version 8CGTW5B3 · Project link unavailable Client onlysodium-fabric-0.7.3+mc1.21.10.jar SHA-1
1c3ffa862d9fa4479abf67a88527907d60237248 · Modrinth version sFfidWgd · Project link unavailable Client onlyyet_another_config_lib_v3-3.8.1+1.21.10-fabric.jar SHA-1
eb2d58b0905ca4ee75207a214d41d36d1bc5d38d · Modrinth version ORi1nScg · Project link unavailable Side not labelledZoomify-2.14.6+1.21.9.jar SHA-1
6a07d3b45d02e86ed5184dfd1309803f777a1a5e · Modrinth version jF5geVmV · Project link unavailable Client onlyPick your setup
Classic Optimized by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
26.1.1
1 loader buildMinecraft version
26.1
1 loader buildMinecraft version
1.21.11
1 loader buildMinecraft version
1.21.10
1 loader buildMade local changes? Try them in a copied instance before touching a world you care about.
Recent files
Classic Optimized versions and loaders
Fabric 0.18.31.21.108.0.312+7 release
Fabric1.21.11 release
Fabric26.1 release
Fabric26.1.1 release
Fabric26.1.2 release
Looking for an older file? The official Modrinth project page is in Resources.
modpack Modrinth · Minecraft
Fabricly Light
A light mod pack while still containing a level of content mods.
modpack Modrinth · Minecraft
Blackhole Menu
This modpack adds nothing except the fancy menu mod fully configured for a black hole look
modpack Modrinth · Minecraft
zy optimised pack
A modpack with a focus on optimisation and quality of life features. Designed for use with vanilla servers.