Mod

FerriteCore
Rank 51
Rank 24 among mods

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FerriteCore

Overall rating distribution
0.5★ (no ratings)
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5 ratings (100%) · 5.0★
0.5★ 5★
Gameplay rating distribution
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1 review (100%) · 5.0★
0.5★ 5★
Aesthetics rating distribution
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1 review (100%) · 5.0★
0.5★ 5★
Performance rating distribution
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4.5★ (no reviews)
4 reviews (100%) · 5.0★
0.5★ 5★

Memory usage optimizations

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Performance & Optimization
Mod Loaders
Forge
NeoForge
Fabric
Quilt
Minecraft
26.2
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5.0

Says what it does and does it well.

Folorn

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Posted: June 24, 2026 at 9:15:07 PM UTC
1,000 hrs
Total hours played at time of review
MC 26.2, 26.… MC 26.2, 26.1, 1.21
The version(s) the reviewer played
Performance
5.0

All you need to know is that it Saves RAM usage on Minecraft, and it does it very well to the point that it saves 50% of usage for my case.

1
0
FerriteCore
5.0

Says what it does and does it well.

Folorn

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Guide 500 pts
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About reputation ranks
Posted: June 24, 2026 at 9:15:07 PM UTC
1,000 hrs
Total hours played at time of review
MC 26.2, 26.… MC 26.2, 26.1, 1.21
The version(s) the reviewer played
Performance
5.0

All you need to know is that it Saves RAM usage on Minecraft, and it does it very well to the point that it saves 50% of usage for my case.

1
0
5.0
Folorn

Reputation ranks

Explorer 0 pts ←
Contributor 100 pts
Guide 500 pts
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: June 24, 2026 at 9:15:07 PM UTC
1,000 hrs
Total hours played at time of review
MC 26.2, 26.… MC 26.2, 26.1, 1.21
The version(s) the reviewer played
1
0
5.0

The most fundamental performance difference possible

Auseawesome

Reputation ranks

Explorer 0 pts
Contributor 100 pts
Guide 500 pts ←
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: June 17, 2026 at 9:27:19 PM UTC
2,000 hrs
Total hours played at time of review
MC 26.1, 1.2… MC 26.1, 1.21, 1.19, 1.20, 1.18, 1.16
The version(s) the reviewer played
Performance
5.0

This mod is absolutely incredible. The performance gains that can be made using this mod on both the server and client are unmistakable, especially in combination with many larger mods.

I would go as far as claiming Ferrite Core as the most important optimisation mod, as RAM is often something minecraft is very tight on, alongside CPU. As a byproduct of reducing RAM, ferrite core often actually frees up CPU by preventing there being such a load on GC.

If you play Minecraft, use this mod. I've never encountered it causing any issues outside of other broken mods breaking it

1
0
FerriteCore
5.0

The most fundamental performance difference possible

Auseawesome

Reputation ranks

Explorer 0 pts
Contributor 100 pts
Guide 500 pts ←
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: June 17, 2026 at 9:27:19 PM UTC
2,000 hrs
Total hours played at time of review
MC 26.1, 1.2… MC 26.1, 1.21, 1.19, 1.20, 1.18, 1.16
The version(s) the reviewer played
Performance
5.0

This mod is absolutely incredible. The performance gains that can be made using this mod on both the server and client are unmistakable, especially in combination with many larger mods.

I would go as far as claiming Ferrite Core as the most important optimisation mod, as RAM is often something minecraft is very tight on, alongside CPU. As a byproduct of reducing RAM, ferrite core often actually frees up CPU by preventing there being such a load on GC.

If you play Minecraft, use this mod. I've never encountered it causing any issues outside of other broken mods breaking it

1
0
5.0
Auseawesome

Reputation ranks

Explorer 0 pts
Contributor 100 pts
Guide 500 pts ←
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: June 17, 2026 at 9:27:19 PM UTC
2,000 hrs
Total hours played at time of review
MC 26.1, 1.2… MC 26.1, 1.21, 1.19, 1.20, 1.18, 1.16
The version(s) the reviewer played
1
0
5.0

Saves you about ~2GB of RAM with no catch, that's it

Panzerschrekt

Reputation ranks

Explorer 0 pts
Contributor 100 pts ←
Guide 500 pts
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: June 6, 2026 at 9:58:09 AM UTC
1,000 hrs
Total hours played at time of review
MC 26.1, 1.2… MC 26.1, 1.21, 1.20, 1.19, 1.18, 1.16
The version(s) the reviewer played
Performance
5.0

Just like what it said this mod basically reduces your memory usage...

How does is do it?

Well, for starters, in Minecraft, every block has a state, and certain block checks the state of it's neighbors too. This interaction allows the creation of fluid and it's interaction (like lava and water => cobblegen), and other other big things that i genuinely still try to comprehend. And these things, they take RAM.

This mod basically optimizes things around that and certain other issues. Either by replacing certain methods with one that measurably takes less ram (in this case FastMap), implements caching for certain things, performs deduplication, and some other things.

In total and in most observations. This mod basically saves you around 2 GB of RAM. This is literally an essential mod (say that again?) especially for big modpacks, just put it in your pack and forget, all benefits, no catch, compatible with everything.

0
0
FerriteCore
5.0

Saves you about ~2GB of RAM with no catch, that's it

Panzerschrekt

Reputation ranks

Explorer 0 pts
Contributor 100 pts ←
Guide 500 pts
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: June 6, 2026 at 9:58:09 AM UTC
1,000 hrs
Total hours played at time of review
MC 26.1, 1.2… MC 26.1, 1.21, 1.20, 1.19, 1.18, 1.16
The version(s) the reviewer played
Performance
5.0

Just like what it said this mod basically reduces your memory usage...

How does is do it?

Well, for starters, in Minecraft, every block has a state, and certain block checks the state of it's neighbors too. This interaction allows the creation of fluid and it's interaction (like lava and water => cobblegen), and other other big things that i genuinely still try to comprehend. And these things, they take RAM.

This mod basically optimizes things around that and certain other issues. Either by replacing certain methods with one that measurably takes less ram (in this case FastMap), implements caching for certain things, performs deduplication, and some other things.

In total and in most observations. This mod basically saves you around 2 GB of RAM. This is literally an essential mod (say that again?) especially for big modpacks, just put it in your pack and forget, all benefits, no catch, compatible with everything.

0
0
5.0
Panzerschrekt

Reputation ranks

Explorer 0 pts
Contributor 100 pts ←
Guide 500 pts
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: June 6, 2026 at 9:58:09 AM UTC
1,000 hrs
Total hours played at time of review
MC 26.1, 1.2… MC 26.1, 1.21, 1.20, 1.19, 1.18, 1.16
The version(s) the reviewer played
0
0
5.0

It considerably reduces the RAM usage

Precise-ModPacker

Reputation ranks

Explorer 0 pts
Contributor 100 pts ←
Guide 500 pts
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: January 7, 2024 at 1:06:11 AM UTC
MC 1.19
The version(s) the reviewer played
Gameplay
5.0
Aesthetics
5.0
Performance
5.0

A must perfomance mod to install, reduces the RAM memory used by the game and it doesn't have any compatibility with other mods.

0
0
FerriteCore
5.0

It considerably reduces the RAM usage

Precise-ModPacker

Reputation ranks

Explorer 0 pts
Contributor 100 pts ←
Guide 500 pts
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: January 7, 2024 at 1:06:11 AM UTC
MC 1.19
The version(s) the reviewer played
Gameplay
5.0
Aesthetics
5.0
Performance
5.0

A must perfomance mod to install, reduces the RAM memory used by the game and it doesn't have any compatibility with other mods.

0
0
5.0
Precise-ModPacker

Reputation ranks

Explorer 0 pts
Contributor 100 pts ←
Guide 500 pts
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted: January 7, 2024 at 1:06:11 AM UTC
MC 1.19
The version(s) the reviewer played
0
0

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Available Platforms

CurseForge logo CurseForge Modrinth logo Modrinth

Compatibility

Supported Environments

Dev Environment
Client Optional
Server Optional

About

Project Details

Type
Mod
License
MIT License
Latest Version
ferritecore-9.0.0-neoforge
Authors
CurseForge
Modrinth

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CurseForge ID
Modrinth ID

Resources

External Links

Source Issues Wiki Discord

About

Description

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).

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 2.5.9 of All Of Fabric 3 it reduces the RAM usage (heap size) from 1,792 MB to 984 MB. For comparison the same setup with Hydrogen instead of FerriteCore uses 1,335 MB.
These values were measured after generating a world with a fixed seed and waiting for two minutes. The project picture is a cropped version of this picture.

FAQ

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.

Is this compatible with [other mod]?

Most likely yes. The only exception is Hydrogen, which is compatible with all recent FerriteCore versions on Minecraft versions where Hydrogen is officially released. This means that 1.18+ builds are not compatible with Hydrogen, since it has been officially archived and won't receive any releases on these versions.

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341.5m
Total Downloads
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213.1m
Modrinth
128.3m
Last Updated
CurseForge
Modrinth
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