Modrinth · Minecraft modpack

Optimized Core

This is a modpack core that optimizes the game. Mainly meant as a base for your own modpack/instance. It only contains optimization mods and for this reason it achives the BEST performance of any modpack!

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

Quick answer

Which Optimized Core release matches 1.18?

Updated today

Best match for your filters Optimized Core Backport MC 1.18

Game version 1.18

Loader Fabric 0.19.2

Optimized Core Backport MC 1.18 is a complete pack release for 1.18 with Fabric 0.19.2. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 17 mods in this pack file.

Pack setup

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

Use Optimized Core Backport MC 1.18 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 Optimized Core Backport MC 1.18

Dedicated server setup Match Optimized Core Backport MC 1.18

Pack loader Fabric 0.19.2

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 17

Client only 9

Server only 2

Not labelled 6

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 Optimized Core?

Optimized Core Backport MC 1.18 on 1.18. The pack contents and setup notes below stay tied to that release.

17 mods in this pack file

The selected pack release is Optimized Core Backport MC 1.18. That file is for Minecraft 1.18 with Fabric 0.19.2. It contains 17 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 Optimized Core?

The pack

It optimizes the game with the bare minimum amount of mods for best performance.

It is mainly meant to be used as a core for modpacks/instances

It would be helpful if you could follow the project :)

Updates:

It is updated as soon as i have time for it or it's logical.

This is usually 1-7 days.

Requirements:

Java 17+ on all versions after 1.8.9

Features:

▶️╏BEST performance among all modpacks!
▶️╏It can run on a mere 360MB ram (when playing on servers)
▶️╏Adds every essential optimization mod
▶️╏Very simple!
▶️╏Very small size
▶️╏You can build whatever you want out of it

No configs included

Support&Contacting me:

Contacting me:

Via Email: void_98.direness683@passinbox.com
In the discord server.

I provide support in both

Credits:

Icon by: Luceria

Project description from Modrinth.

Mods in Optimized Core Backport MC 1.18

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

c2me-fabric-mc1.18.1-pre1-0.2.0+alpha.5.96-all.jar SHA-1 b6ebcc8f21f5aef9c349a95d1aa7632d4f477312 · Modrinth version yjCsfBzI · Project link unavailable Side not labelled

cullclouds-0.1.1.jar SHA-1 5ffdf27c0077b6522401f9cf956a1670903eac7e · Modrinth version FdbZ4QGB · Project link unavailable Client only

enhancedblockentities-0.5+1.18.jar SHA-1 c7111f560caf965c18a13edcfbe789a87cf904f4 · Modrinth version qbUAJjs9 · Project link unavailable Client only

entityculling-fabric-mc1.18-1.5.1.jar SHA-1 523c57485a469c581d7a9bd18ec86c7a92a0ec93 · Modrinth version 4GD4dwQK · Project link unavailable Client only

fabric-api-0.44.0+1.18.jar SHA-1 3bd3ad0e60c7f58761fdac6512b45ab3102d6eae · Modrinth version RSZHmY2f · Project link unavailable Side not labelled

ferritecore-4.0.0-fabric.jar SHA-1 e29e1f3991ea94a161eebd9faf68f9d489d588f3 · Modrinth version 1FrNtQTK · Project link unavailable Side not labelled

GpuTape-1.18x-1.21x-1.0.5.1.jar SHA-1 bcfb81808c318356e7a7a4544be27b220fecfd96 · Modrinth version ZoOH4tOq · Project link unavailable Client only

Ksyxis-1.4.3.jar SHA-1 6f4b2ea7827da8136bdf436457a2ba3fcdb2120e · Modrinth version kL32PN9Q · Project link unavailable Server only

language-reload-1.2.jar SHA-1 1590b32c7f611b522098f0dee252ee15e21e74b5 · Modrinth version De5hWChg · Project link unavailable Client only

lazy-language-loader-0.2.6.jar SHA-1 c4f0e2b5f346d59b532133e03570521fa2a74b2c · Modrinth version PJ7zhWNk · Project link unavailable Client only

lazydfu-0.1.2.jar SHA-1 2efec5781f1271bdcdae462eee402ccb97bff6fe · Modrinth version C6e265zK · Project link unavailable Side not labelled

lithium-fabric-mc1.18-0.7.6-rc1.jar SHA-1 2190e753bdd33f48213ef5085908a9470622cbf0 · Modrinth version 2w527DB2 · Project link unavailable Side not labelled

moreculling-1.18.2-0.1.2.jar SHA-1 ed531453999b78922a306c8ea9c6632f268bd8ff · Modrinth version kyoVWOaa · Project link unavailable Client only

servercore-1.2.6-1.18.1.jar SHA-1 0435bf82b2756d4f256f8255d3817c0fe018bbc7 · Modrinth version LdRH09D2 · Project link unavailable Server only

serverpingerfixer-1.0.4.jar SHA-1 e68da275e6246fdb4e0241ba1df35182e1d0ffd2 · Modrinth version fHvfA2My · Project link unavailable Client only

Recent files

Optimized Core versions and loaders

1 of 109 releases match

Optimized Core Backport MC 1.18

11 May 2026

Check the 1.18 · Fabric setup

Fabric 0.19.21.188.0.312+7 release

Download on Modrinth

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