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OptiCores project artwork

Modrinth · Minecraft mod

OptiCores

A client-side rendering optimization mod for NeoForge, featuring asynchronous culling specifically tuned for integrated graphics (Intel UHD/Iris Xe).

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

Quick answer

Which OptiCores release should I use?

Updated 2 days ago
Latest stable file 1.1.0
Game version 1.21.1, 1.21.2, 1.21.3
Loader Fabric

OptiCores 1.1.0 targets 1.21.1, 1.21.2, 1.21.3 with Fabric. It must be installed on the client. Do not install it on the dedicated server. No extra mods listed for this file.

Where it goes

Is OptiCores required on the client, server, or both?

It must be installed on the client. Do not install it on the dedicated server.

Client Required
Dedicated server Not supported
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

This file is marked client-only.

What else does OptiCores 1.1.0 need?

1.1.0. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add OptiCores without breaking your instance.

Built for OptiCores 1.1.0. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use 1.1.0. It targets 1.21.1, 1.21.2, 1.21.3 with Fabric; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    It must be installed on the client. Do not install it on the dedicated server.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside 1.1.0. It opens that exact file at the source.

About this project

What does OptiCores add?

A side-by-side Minecraft comparison showing higher FPS without shaders and better graphics with shaders.
kofi-plural-alt


Thank you for the support!, Now i am going to continue working on the Opticores project.


Opticore: Asynchronous Rendering Optimization
Opticore is a client-side companion mod for Embeddium and Sodium on NeoForge 1.21.1. It is specifically designed to alleviate the "Main Thread" bottlenecking found on systems using integrated graphics (Intel UHD, Iris Xe, and mobile CPUs).

Core Functionality

  • Asynchronous Culling Pipeline: Unlike standard culling methods that run on the main render thread, Opticore offloads Euclidean distance and Frustum-intersection math to a background worker thread.

  • Concurrent Data Management: Rendering visibility results are stored in a thread-safe ConcurrentHashMap, allowing for O(1) lookups during the render cycle with near-zero latency.

  • Dynamic Load Throttling: The mod monitors getSectionStatistics() to detect heavy chunk-loading periods. During high I/O spikes (e.g., world joining or teleporting), the mod temporarily reduces entity rendering overhead to prioritize terrain generation.

  • Technical Compatibility: Includes safety bypasses for custom block entity renderers (such as those in the Create Mod) and integrates with Distant Horizons to prevent culling during LOD baking passes.

Performance Impact
Opticore is most effective in environments with high entity counts (villages, farms, or modded dimensions). By offloading culling logic, it helps stabilize frame times and reduces "stuttering" during world exploration on 2-core and 4-core processors.

Project description from Modrinth.

Pick your setup

OptiCores by Minecraft version and loader

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

37 available setups

Showing the newest 12 of 15 game versions. Older files are in the list below.

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

OptiCores versions and loaders

19 of 19 releases match

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