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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 1.20.1 Forge?

Updated last month
Best match for your filters OptiPrime-FG15-1.20.1 [Forge] [1.20.1]
Game version 1.20.1
Loader Forge 47.4.20

OptiPrime-FG15-1.20.1 [Forge] [1.20.1] is a complete pack release for 1.20.1 with Forge 47.4.20. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 27 mods in this pack file.

Pack setup

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

Use OptiPrime-FG15-1.20.1 [Forge] [1.20.1] 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-FG15-1.20.1 [Forge] [1.20.1]
Dedicated server setup Match OptiPrime-FG15-1.20.1 [Forge] [1.20.1]
Pack loader Forge 47.4.20

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 27
Client only 10
Server only 6
Not labelled 11

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-FG15-1.20.1 [Forge] [1.20.1] on 1.20.1 Forge. The pack contents and setup notes below stay tied to that release.

27 mods in this pack file

The selected pack release is OptiPrime-FG15-1.20.1 [Forge] [1.20.1]. That file is for Minecraft 1.20.1 with Forge 47.4.20. It contains 27 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-FG15-1.20.1 [Forge] [1.20.1]

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

alternate_current-mc1.20-1.7.0.jar SHA-1 02def44a2c416459ee5daecbe1caa6d78571e205 · Modrinth version kC6SY4Zp · Project link unavailable Server only
BadOptimizations-2.4.1-1.20.1.jar SHA-1 304007dcb0fb15ed1a1bc3771736470dafc5be0f · Modrinth version DIugITgU · Project link unavailable Client only
CullLessLeaves-Reforged-1.20.1-1.0.5.jar SHA-1 71b1603071461e036a3ba2aaeeb52cc10fa3d348 · Modrinth version wPOb8yEG · Project link unavailable Client only
EBE-1.20-1.20.1-0.9.1B.jar SHA-1 581ac917ce1708a708fe5c66eef82e1978972743 · Modrinth version rQm3ja4Q · Project link unavailable Client only
embeddium-0.3.31+mc1.20.1.jar SHA-1 bb2fa8f3e493af16af9160d049f96c614a1faf2f · Modrinth version UTbfe5d1 · Project link unavailable Client only
entityculling-forge-1.10.5-mc1.20.1.jar SHA-1 b818f6d792b79f4ec116c89704e70292bd6f72b5 · Modrinth version MloBcsQQ · Project link unavailable Client only
fastpaintings-1.20-1.2.7.jar SHA-1 036137a54b8f503794cf38296ff4c7fbf2e9d5cc · Modrinth version Bvjyyy1T · Project link unavailable Side not labelled
ferritecore-6.0.1-forge.jar SHA-1 417fb6ce8f52abf40bd9d0390371790f9576f8ba · Modrinth version DG5Fn9Sz · Project link unavailable Side not labelled
flerovium-forge-1.20.1-1.2.19-all.jar SHA-1 6f1536b97ce65a4a0fba2887aa2b1fa46be252b7 · Modrinth version nBTmGp0v · Project link unavailable Client only
gnetum-2.5.0+1.20.1-forge.jar SHA-1 bbee09bbcf6500497eead39c585046a737c1866e · Modrinth version p5JeCmwz · Project link unavailable Client only
Icterine-forge-1.20.0-1-1.3.0.jar SHA-1 55fde23d7602924ba4772d441fb5a78d562be238 · Modrinth version 81fZ7ynE · Project link unavailable Server only
ImmediatelyFast-Forge-1.5.5+1.20.4.jar SHA-1 9eacd407b7dea636d375dc47335d92f616484ea2 · Modrinth version rvsLEEZU · Project link unavailable Client only
Krypton Reno-forge-1.20.1-26.1.1-1.20.1.jar SHA-1 bfa957bfa1f477f2cba4bd7fdf0e803095f80621 · Modrinth version sEH8i7QQ · Project link unavailable Side not labelled
memoryleakfix-forge-1.17+-1.1.5.jar SHA-1 9f60142dd94631800386a16a4ad70ad9e84cd78a · Modrinth version 3w0IxNtk · Project link unavailable Side not labelled
modernfix-forge-5.27.76+mc1.20.1.jar SHA-1 62412a6dccdb7c66320955f01769b7fa1d8492ad · Modrinth version 6by2SBrT · Project link unavailable Side not labelled
moonlight-1.20-2.16.34-forge.jar SHA-1 5e20f2f0ce56a534accb32f80853d5a246599a4d · Modrinth version 43kjMXMx · Project link unavailable Side not labelled
noisiumed-forge-3.0.6+mc1.20-1.20.1.jar SHA-1 34130d62dac472eae1357a1f0d64867a19fd3402 · Modrinth version LbWCNzST · Project link unavailable Server only
oculus-mc1.20.1-1.8.0.jar SHA-1 984f774e71790deaec674c7587bd24e0711871b2 · Modrinth version iQ1SwGc3 · 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
radium-mc1.20.1-0.12.4+git.26c9d8e.jar SHA-1 f5f5f792473bb7b85ec221f75c5afb3740afb13a · Modrinth version n947JjJH · Project link unavailable Server only
resourcefulconfig-forge-1.20.1-2.1.3.jar SHA-1 597d40920dcc935f963842c817dcc4901862ab14 · Modrinth version DERs8u7v · Project link unavailable Side not labelled
rubidium-extra-0.5.4.4+mc1.20.1-build.131.jar SHA-1 bb422d5626bf69841e444a3e545c8e71b6928cf8 · Modrinth version F06DXCMX · Project link unavailable Client only
saturn-mc1.20.1-0.1.3.jar SHA-1 ad93f99d46714c46aaa6a4409aeca506e9fcac99 · Modrinth version Yx85DYaG · Project link unavailable Side not labelled
servercore-forge-1.5.2+1.20.1.jar SHA-1 75c6418edc76da55ec89f417e8c43c9d1873fceb · Modrinth version rx1c7m6q · Project link unavailable Server only
starlight-1.1.2+forge.1cda73c.jar SHA-1 a915880c7834a0b0f9f300f0e3053deaa9a3205a · Modrinth version cNa0vkNj · Project link unavailable Side not labelled
structure_layout_optimizer-forge-1.0.11.jar SHA-1 c2f2d42c987a611c6a14769ec02099e3439dc0f3 · Modrinth version EazfspJH · Project link unavailable Server only
ToadLib-1.20.1-1.3.5S-3.jar SHA-1 53a83e70598ee58bda0a8227ec422e409f09a37a · Modrinth version GRklnAqI · Project link unavailable Side not labelled

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OptiPrime by Minecraft version and loader

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19 available setups

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Recent files

OptiPrime versions and loaders

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