What FerriteCore works with.
| Platform | Java Edition |
|---|---|
| Loaders | Fabric, Forge, NeoForge, Quilt |
| Minecraft versions | 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.1.2, 26.2 |
FerriteCore focuses on reducing Minecraft Java Edition memory usage without changing gameplay. Fabric and NeoForge builds stay current, with the 9.0.0 release reaching Minecraft 26.2. Forge and Quilt builds also exist, but neither has shipped since 2023: Forge stops at 1.20.1 and Quilt at 1.20.4, so treat those two as legacy options rather than an active choice.
- Loaders: Fabric, Forge, NeoForge, and Quilt, though only Fabric and NeoForge get current builds.
- Side: optional on client and server, with the creator FAQ noting that some higher-impact optimizations matter on servers too.
- Latest Modrinth file checked: ferritecore-9.0.0-fabric.jar, listed at 71 KB.
- License: MIT License on Modrinth.
What it changes
The mod targets internal memory usage in several areas of Minecraft. The project page describes it as memory usage optimization, and links to a technical summary for players who want to understand the implementation details before adding it to a larger modded setup.
FerriteCore is most relevant for players building modpacks, running a server, or trying to keep a heavily modded client within a tighter memory budget. It is not a gameplay content mod, so players should expect a utility change rather than new blocks, mobs, dimensions, or progression systems. It is often installed alongside other optimization mods that target different systems, such as Lithium for general tick performance and ModernFix for additional memory and startup fixes.
Compatibility notes
FerriteCore should usually be installed on both client and server because some optimizations affect each side. It also calls out Hydrogen as the main compatibility exception on versions where Hydrogen is released, with 1.18 and newer builds not compatible because Hydrogen was archived for those versions. Players also stack it with mods that target other systems, such as Krypton for networking and C2ME for chunk loading.
Questions about FerriteCore.
3 questions
Should FerriteCore be installed on the server or client?
The creator FAQ says some optimizations are client-side only, while other higher-impact optimizations also matter on servers. For that reason, the project page advises installing it on both sides when possible.
Does FerriteCore add new gameplay content?
No. FerriteCore is an optimization utility mod focused on reducing memory usage, not adding blocks, mobs, dimensions, or progression content.
Is FerriteCore compatible with Hydrogen?
The creator FAQ identifies Hydrogen as the main exception. Recent FerriteCore builds for Minecraft 1.18 and newer are not compatible with Hydrogen because Hydrogen was archived for those versions.
