Optim is an optimization modpack that focuses on both the client and the server. It makes use of a vast range of optimzation mods, using popular ones such as Sodium, Lithium, and FerriteCore, while also making using of lesser known mods such as Client Side Noteblocks, Compact Chat, Clean F3, and more.
Features
- More FPS
- Bug fixes
- Faster language load times
- Faster world and server load times
- More readable chat
- and more!
FPS Comparison
Vanilla: 70+ FPS
Simply Optimized: 150+ FPS
Optim: 300+ FPS
Tested on a GTX 1660 Ti GPU with a Xeon E5-2670 CPU
FAQ
Q: Will Optim support versions before / after 1.21?
A: Most likely! The modpack is pretty lightweight so it shouldn't be hard to port it to other versions.
Q: Forge?
A: No.
Q: Shaders?
A: No.
Q: Vanilla-like?
A: Hell yeah.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as Optim 1.0.0.mrpack
- Download size: 33 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.