CurseForge · Minecraft mod
FerriteCore ((Neo)Forge)
Memory usage optimizations
Quick answer
Which FerriteCore ((Neo)Forge) release matches 1.21.5 NeoForge?
FerriteCore ((Neo)Forge) ferritecore-8.0.4-neoforge targets 1.21.8, 1.21.5, 1.21.6 with NeoForge. The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server. No extra mods listed for this file.
Where it goes
Is FerriteCore ((Neo)Forge) required on the client, server, or both?
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
The source does not explicitly classify this release as client-only or server-only.
What else does FerriteCore ((Neo)Forge) ferritecore-8.0.4-neoforge need?
ferritecore-8.0.4-neoforge on 1.21.5 NeoForge. Every mod below is checked against that same setup.
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 FerriteCore ((Neo)Forge) without breaking your instance.
Built for FerriteCore ((Neo)Forge) ferritecore-8.0.4-neoforge on 1.21.5 NeoForge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use ferritecore-8.0.4-neoforge. It targets 1.21.8, 1.21.5, 1.21.6 with NeoForge; another release may have different loader, side or dependency requirements.
- 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.
- 03
Put it on the correct side
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside ferritecore-8.0.4-neoforge. It opens that exact file at the source.
About this project
What does FerriteCore ((Neo)Forge) add?
This page is for the Forge version. If you are looking for the Fabric version you can find it here.
This mod reduces the memory usage of Minecraft in a few different ways. A high-level technical description of the changes is available here.
The amount of memory saved will depend on the pack, in version 1.2.0 of the 1.16.4 Direwolf20 pack it reduces the memory usage (after GC) on the title screen roughly from 3.1 GB to 1.1-1.2 GB.
The project picture is a cropped version of this picture.
FAQ
Can you backport this to [MC version before 1.16]?
No, I won't backport it. I do not consider it worth the effort, and would like to encourage people to use more recent versions.
Should I install this on the server or just on the client?
Some optimizations are client-side only, but there are some rather high-impact optimizations that are relevant on the server too. So you should install it on both sides.
This is the Forge page, why are there Fabric builds here?
I released those builds before I created the Fabric page, you should ignore them (unless you're specifically looking for older builds of FerriteCore on Fabric).
Project description from CurseForge.
Pick your setup
FerriteCore ((Neo)Forge) by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader build26.1.1
1 loader build26.1
1 loader build1.21.11
1 loader build1.21.10
1 loader build1.21.9
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
1 loader buildShowing the newest 12 of 32 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
FerriteCore ((Neo)Forge) versions and loaders
ferritecore-8.0.4-neoforge
ferritecore-8.0.4-neoforge.jar
25 Jan 2026
ferritecore-8.0.0-neoforge
ferritecore-8.0.0-neoforge.jar
30 Mar 2025
Looking for an older file? The official CurseForge project page is in Resources.