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OptiPrime project artwork

Modrinth · Minecraft modpack

OptiPrime

A pre-configured, open-source client modpack that replaces OptiFine. It increases framerates (FPS) and lowers RAM allocation through a tested combination of performance mods.

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

Quick answer

Which OptiPrime release matches 1.19.4?

Updated 29 days ago
Best match for your filters OptiPrime FB04 [1.19.4] [Fabric]
Game version 1.19.4
Loader Fabric 0.19.5

OptiPrime FB04 [1.19.4] [Fabric] is a complete pack release for 1.19.4 with Fabric 0.19.5. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 37 mods in this pack file.

Pack setup

How should I set up OptiPrime for players and a server?

Use OptiPrime FB04 [1.19.4] [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 OptiPrime FB04 [1.19.4] [Fabric]
Dedicated server setup Match OptiPrime FB04 [1.19.4] [Fabric]
Pack loader Fabric 0.19.5

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 37
Client only 19
Server only 3
Not labelled 15

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 OptiPrime?

OptiPrime FB04 [1.19.4] [Fabric] on 1.19.4. The pack contents and setup notes below stay tied to that release.

37 mods in this pack file

The selected pack release is OptiPrime FB04 [1.19.4] [Fabric]. That file is for Minecraft 1.19.4 with Fabric 0.19.5. It contains 37 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 OptiPrime?

OptiPrime is a pre-configured client modpack built to reduce RAM consumption and increase framerates (FPS). It functions as an open-source alternative to OptiFine.

Functional Features

  • Pre-assembled: A ready-to-use mod list. Requires no manual searching or testing of individual mods.
  • Resource Management: Lowers memory allocation and stabilizes frametimes across different hardware setups.
  • Open-Source Base: Compiled entirely from open-source projects, ensuring technical transparency and rapid updates.
  • Multi-Loader Support: Actively maintained for NeoForge, Fabric, Forge, and Quilt.

Technical Foundation

Performance is achieved through a specific set of mods (exact list varies by loader and game version):

  • Rendering: Sodium / Embeddium alters chunk rendering logic to increase FPS.
  • Memory: FerriteCore and ModernFix reduce RAM usage and patch vanilla memory leaks.
  • Culling: EntityCulling and MoreCulling skip the rendering of unseen entities and blocks to save CPU cycles.
  • Shaders: Iris / Oculus provide native compatibility for shader packs.

Version Support

We maintain the modpack across the following game versions:

Minecraft Version Supported Loaders Status
26.2 NeoForge, Fabric 🟢 Active (Frequent updates)
26.1.2 NeoForge, Fabric 🟢 Active
1.21.4 NeoForge, Fabric 🟡 Stable / LTS
1.21.1 NeoForge, Fabric 🟡 Stable / LTS
1.20.1 NeoForge, Fabric, Forge, Quilt 🟡 Stable / LTS
1.19.4 Fabric 🟡 Stable / LTS
1.16.5 & 1.12.2 Forge, Fabric 🟡 Stable / LTS
1.19.2 & Below Fabric, Quilt 🔴 Not supported

Feedback & Bug Reports

Bug reports, technical suggestions, and direct communication with the developer are handled via our Discord server.

Project description from Modrinth.

Mods in OptiPrime FB04 [1.19.4] [Fabric]

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

alternate-current-mc1.19-1.9.0.jar SHA-1 4678a87a9556822f72697ca209ca305a8b737f83 · Modrinth version J9KWRYnZ · Project link unavailable Server only
BadOptimizations-2.1.4-1.19.4.jar SHA-1 330c0dd1f933d4ae5911cddc04324541dd0aea07 · Modrinth version xhGlhCut · Project link unavailable Client only
badpackets-fabric-0.4.3.jar SHA-1 87b7ef4e9c9bff0fd8cdcc79156e9c7ac7b26690 · Modrinth version JjLWLyDz · Project link unavailable Side not labelled
betterconfig-1.0.7.jar SHA-1 7cb4318db0c7519f41d65b5b96e00d1815ffe36a · Modrinth version 47JddMWR · Project link unavailable Side not labelled
bettermounthud-1.2.1.jar SHA-1 7cd40803e2dcfe42a7a3c3984e47a059ac2151ec · Modrinth version wqS80NMj · Project link unavailable Client only
brrp-fabric-1.0.1-1.19.4.jar SHA-1 8a0e7bc91fcc5466e78fbed40456469f5183b2c1 · Modrinth version qRQ76Rf0 · Project link unavailable Side not labelled
Debugify-1.19.4+2.2.jar SHA-1 58fdeaea295d537d021d4123ee4dbdd8550e8563 · Modrinth version jskCDMsk · Project link unavailable Side not labelled
enhancedblockentities-0.9+1.19.4.jar SHA-1 97ffe54d7f5294fe6c8b529f51ef4b208b3ab1a7 · Modrinth version Xdo5ZiRc · Project link unavailable Client only
entityculling-fabric-1.11.2-mc1.19.4.jar SHA-1 4bd3dbceda709a892f9063fbc83b78a3fe14ffca · Modrinth version 6Me4r9NQ · Project link unavailable Client only
exordium-fabric-1.1.2-mc1.19.4.jar SHA-1 f9946c85bf4852d35f0638857866211d00cb31a0 · Modrinth version 43KZxX8a · Project link unavailable Client only
fabric-api-0.87.2+1.19.4.jar SHA-1 586ac174c831da9fd35edce1e36eb14c7f878ce3 · Modrinth version nyAmoHlr · Project link unavailable Side not labelled
fast-ip-ping-v1.0.12-mc1.19.4-fabric.jar SHA-1 4069d4c28dbc524e13396e8052e1c994e68a2fad · Modrinth version SFwu7xRM · Project link unavailable Client only
fastquit-2.1.0+1.19.3.jar SHA-1 5d654a6bcba251d7619cea6053c5eeaf56a3fa0a · Modrinth version 5HxlwbWf · Project link unavailable Client only
ferritecore-5.2.0-fabric.jar SHA-1 ed6fa9a9365d4e58db6703479a44cc6aed5add2f · Modrinth version RbR7EG8T · Project link unavailable Side not labelled
ForgeConfigAPIPort-v6.0.2-1.19.4-Fabric.jar SHA-1 3feea15d1bb0d9b6644cf3ac7465bb9e031efa84 · Modrinth version 2TybfFU8 · 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
Icterine-fabric-1.2.0.jar SHA-1 f022d709c3fe835ca271878af328167a98a5afad · Modrinth version uLW5BoNd · Project link unavailable Server only
ImmediatelyFast-Fabric-1.2.11+1.19.4.jar SHA-1 956a23c27590dd14195128708cd6e59b057a10dc · Modrinth version ezKTj0NE · Project link unavailable Client only
indium-1.0.19+mc1.19.4.jar SHA-1 55638e279d8a19ea5df67ff86feb6350e95376e1 · Modrinth version oYQsfz9e · Project link unavailable Client only
iris-mc1.19.4-1.6.11.jar SHA-1 1b7a1a5831fc39a0a74582497be9bb03dcb9f7f6 · Modrinth version wN6PuLPa · Project link unavailable Client only
krypton-0.2.2.jar SHA-1 fb9166a88757582c5b8ca1627a0a275c05db4a5d · Modrinth version Tncui9tU · Project link unavailable Side not labelled
Ksyxis-1.4.5.jar SHA-1 026b789a30de912a40911443c37c2fc92579629e · Modrinth version 9CU8nnVG · Project link unavailable Server only
language-reload-1.6.1+1.19.4.jar SHA-1 6c5e9569057daacd557df6feecfdb056a846ac69 · Modrinth version 1tLEbOZk · Project link unavailable Client only
lithium-fabric-mc1.19.4-0.11.1.jar SHA-1 69aa137957af4f0f701f6a7663c6d8646f84a1cc · Modrinth version 14hWYkog · Project link unavailable Side not labelled
modelfix-1.10-fabric.jar SHA-1 fd52ec87add371140066fc3ae95d68c83f8a6ee5 · Modrinth version i0mERlxq · Project link unavailable Client only
modernfix-fabric-5.7.2+mc1.19.4.jar SHA-1 53ec153757699d3998f74891d8ac8ef13b3da2aa · Modrinth version LXlsO4Vo · Project link unavailable Side not labelled
modmenu-6.3.1.jar SHA-1 ab2736e00597ba8b11e4f58573eb49c79e0417b4 · Modrinth version lMqXEzUw · Project link unavailable Client only
moreculling-1.19.4-0.17.0.jar SHA-1 91d4fdb4786d2dfe56a84dff552bcadbebc88cec · Modrinth version A9LKf67q · Project link unavailable Client only
packetfixer-3.3.2-1.18-1.20.4-merged.jar SHA-1 79ebc5e66a5ee3ce92afb340e693d506e97361a0 · Modrinth version 9F4NGhGR · Project link unavailable Side not labelled
reeses_sodium_options-1.6.3+mc1.19.4-build.90.jar SHA-1 4a44da582bd62761f2f7d5eb8a9753a132a72427 · Modrinth version vjKE54Zq · Project link unavailable Client only
sodium-extra-0.4.18+mc1.19.4-build.100.jar SHA-1 7e6d64f8a5ac5a64be79547e4a9a7d21e9f5597f · Modrinth version YknbqkHe · Project link unavailable Client only
sodium-fabric-mc1.19.4-0.4.10+build.24.jar SHA-1 b060680929d7a6d130fb980a9f9907461df05fa1 · Modrinth version b4hTi3mo · Project link unavailable Client only
spark-1.10.37-fabric.jar SHA-1 11ca9a59e95b50a9cbfb3b1e14b8bfd7cfa7e31c · Modrinth version XhFbpH8f · Project link unavailable Side not labelled
starlight-1.1.1+fabric.ae22326.jar SHA-1 de6fe932555604345477db89b59d59249909c640 · Modrinth version qH1xCwoC · Project link unavailable Side not labelled
TieFix-1.13.1.jar SHA-1 8aa7d14ee627c450b93cab6162e82deee09aa132 · Modrinth version fMYs25DX · Project link unavailable Client only
vmp-fabric-mc1.19.4-0.2.0+beta.7.73-all.jar SHA-1 f4b2f082798bfadb88ac1b305b7cc0f115986187 · Modrinth version NkCv7j6N · Project link unavailable Side not labelled
yet-another-config-lib-fabric-3.1.1+1.19.4.jar SHA-1 52a6c69a822c3592ed5f8b2285a2905d53a4c7aa · Modrinth version gJ6ZmZ4Z · Project link unavailable Side not labelled

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OptiPrime by Minecraft version and loader

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

19 available setups

Made local changes? Try them in a copied instance before touching a world you care about.

Recent files

OptiPrime versions and loaders

6 of 235 releases match
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