OptimumFuse

What is OptimumFuse?

OptimumFuse is a Fabric, Forge, NeoForge and Quilt modpack for Minecraft 1.21.1, published by UltimatChamp on Modrinth since 2023.

The latest release, 1.16.0+fabric.1.21.1 from Nov 5, 2025, declares 189 mods plus 24 other projects such as resource packs or shaders. Across 179 published versions it has covered Minecraft 1.16.5 through 1.21.5.

With 45K downloads it ranks #388 of the 518 most-downloaded Modrinth modpacks we track, and its authors tag it as lightweight and optimization.

• Lightweight
• Multiplayer
• Optimization

Most widely used mods in OptimumFuse

The latest version declares 213 projects, 189 of them mods. The ones below appear in the most packs we track.

• Cloth Config API
• FerriteCore
• Entity Culling
• Sodium
• Fabric API
• ImmediatelyFast
• Lithium
• Mod Menu
• Iris Shaders
• YetAnotherConfigLib (YACL)
• Architectury API
• Fabric Language Kotlin
• [ETF] Entity Texture Features
• [EMF] Entity Model Features
• Sodium Extra
• Reese's Sodium Options
• Mouse Tweaks
• Konkrete
• ModernFix
• Continuity
• 3D Skin Layers
• Dynamic FPS
• More Culling
• Not Enough Animations

Full OptimumFuse mod list

3 more files are bundled inside the pack without a Modrinth project, so we cannot name them.

How its mod list compares

Less common picks: 8 mods found in five or fewer tracked packs.

• Better Command Autocomplete
• Better Highlighting
• Cloth Gamerules
• DisableHotbarWrap
• Enchantment Lore
• GenshinThirdPerson
• Handful
• Hey Wiki

Packs with the most mods in common

• Client+ Fabric for 26.1.2 70 mods in common
• Arcomua Cloth Fabric / Quilt for 26.2 60 mods in common
• [NEW] Cobblemon Cobbletwo - Best Cobblemon Experience Fabric for 1.21.1 65 mods in common
• Keo Vanilla Fabric for 1.21.11 64 mods in common
• Cobblemon Apex Fabric for 1.21.1 57 mods in common

What kinds of mods are in OptimumFuse?

Of its 189 mods, 131 are tagged utility, 43 decoration and 37 optimization. Mods can carry several tags, so the counts overlap.

At 69% utility, that is a larger share than 94% of the 491 packs we track.

• utility: 131 (69%)
• decoration: 43 (23%)
• optimization: 37 (20%)
• library: 29 (15%)
• game mechanics: 19 (10%)
• management: 16 (8%)

How big is OptimumFuse?

With 189 mods, OptimumFuse has more mods than 90% of the 491 packs we track and more mods than 85% of the 86 on Minecraft 1.21.1.

The pack file is 380 KB. 139 mods are client-only and 50 also run on a server. Alongside the mods it declares 24 resource packs.

How actively is OptimumFuse updated?

OptimumFuse was first published on Jul 29, 2023, and has 179 published versions in total.

The latest release, 1.16.0+fabric.1.21.1, is dated Nov 5, 2025, 371 days before our data was fetched on Nov 11, 2026. Releases have covered 11 Minecraft versions over 2.3 years.

Staple mods OptimumFuse includes and leaves out

Across the 325 Fabric packs we track, 15 mods turn up most often. OptimumFuse includes 14 of them; it leaves out Text Placeholder API.

How much RAM does OptimumFuse need?

OptimumFuse needs 8 GB allocated (6 GB minimum). Our estimate from the 189-mod list, not measured.

How to set allocated memory

How to install OptimumFuse

Search for "OptimumFuse" in the Modrinth source of your launcher. Pick version 1.16.0+fabric.1.21.1 for Minecraft 1.21.1 (Fabric, Forge, NeoForge and Quilt). Modpack install guide.

Does OptimumFuse need a server install?

No: OptimumFuse is marked client-only on Modrinth, so there is no server install and players can join an ordinary server running Minecraft 1.21.1.

Modpack server guide.

Versions

Newest build for each of 18 Minecraft version and loader pairs, 15 shown.

Official links

• OptimumFuse on Modrinth (downloads and changelog)
• Wiki
• Source code
• Issue tracker
• Discord

Facts on this page come from Modrinth's public API, last fetched Nov 11, 2026. Descriptive text is our own. Spotted an error, or are you the author and want something changed? See disclaimer and takedowns.