FermiumASM
ModA mod that reduces memory use and fixes crashes.
Why gradeC
How grades workStrengths
Points lost
- No release in 7 months−10 points
- Releases in only 3 of the last 24 months−4 points
- Some modpacks removed it−1 point
All 11 criteria
Maintenance
10 points lost17 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.7 months ago (11 Mar 2026). 54 modpacks released in the last 6 months still include it, so it keeps 51% of these points. 6 / 12Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.12.2 on Forge. A version many modpacks still use. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 3 of the last 24 months 2 / 6Stability
1 point lost14 / 15Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.23 of the 176 modpacks with two or more versions removed it in a later one (13%) See the 23 modpacks9 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.1 known conflict, but it does not count in the grade See the known conflict5 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · fonnymunkey/FermiumASM 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · fonnymunkey/FermiumASM 3 / 3Popularity
Full points4 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.2,594,408 4 / 4Track record
4 points lost4 / 8AgeHow long the project has existed. It counts less when no new file came out recently.2.7 years, 9 releases 4 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file. See Security
49.3 of the 64 points that apply = 77 out of 100. The points above are rounded to whole numbers.
About
FermiumASM is a Minecraft optimization and improvement mod intended to reduce memory use, improve performance, and fix crashes and bugs in Minecraft, Forge, and some other mods. It also improves crash handling, including an option to upload crash reports directly to mclo.gs. This fork uses FermiumBooter for mixin loading and removes its built-in Spark profiler, with Spark Unforged cited as the compatible alternative. It includes compatibility fixes or warnings for mods such as Dynamic Trees and OptiFine, and incorporates functionality improved over VanillaFix and TexFix; it is incompatible with those two mods.
Written from Modrinth , CurseForge and the GitHub README . How we write it
In-game changes
It has no file for a recent Minecraft version. This is about its files for Minecraft 1.12.2.
Changes the game's code in 10 areas: Rendering and graphicsChanges 8 game code files in this area: drawing mobs, items, particles and textures on screen., World renderingChanges 6 game code files in this area: drawing the terrain, sky, clouds and weather., Game coreChanges 6 game code files in this area: the main loop, lighting and other code the whole game uses., Mobs and their behaviorChanges 3 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Chunk loading and storageChanges 2 game code files in this area: how the game loads, tracks, saves and unloads chunks., Inventory and itemsChanges 2 game code files in this area: items, chests and other containers, crafting and enchanting., Server and world logicChanges 2 game code files in this area: the world, commands, scoreboards, saved data and game rules., PlayerChanges 1 game code file in this area: your character: movement, abilities, hunger and controls., Blocks and fluidsChanges 1 game code file in this area: how blocks, fluids and redstone work. and Other game codeChanges 5 game code files in this area: game code that is not in one of the areas above..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Often used with it
See all 30Details
- Creator
- fonnymunkey
- License
- GNU Lesser General Public License v2.1 only
- Downloads
- 2.6M
- Created
- 5 Feb 2024
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Discord
Security
No harmful code found
It has no file for a recent Minecraft version. This is about its files for Minecraft 1.12.2.
We checked its files and read their code, without running it.
What it can do on your computer
- Connects to the internet
- It has code that can go online, for example to check for updates, load skins or send crash reports. It contacts 2 web addresses. See Privacy
- Creates settings files
- The mod keeps its settings in the config folder of your game, where you can change or delete them. 2 files in your config folder.
Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.
How we checked
- FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.1 latest file. It is not for a recent Minecraft version, so the answer above is about it. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
- Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.Read without running it
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
- Looked for, not foundWe looked for these in the file and did not find them.Folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
Privacy
Sends crash reports
It has no file for a recent Minecraft version. This is about its files for Minecraft 1.12.2.
Sent to api.mclo.gs.
We found this in its code, read without running it.
Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.The code of its one file, for Minecraft 1.12.2. See each file in Releases
- api.mclo.gsUploads crash reports or logs.Crash reports
- raw.githubusercontent.comDownloads method mappings used to deobfuscate stack traces.Explained by AI (may be wrong)Explained by an AI from the code. May be wrong.Nothing about you
- Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.Nothing declared about crash reports, usage data or advertisements.
AI
No sign that AI was used to make it
We looked for AI tools in its texts, files, images and code history and found none.
No sign of AI in the game
We found no AI service, AI library or AI model file in its code.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.No AI content or AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Nothing found
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found6 of 18 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Nothing found
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Nothing found1 image read
- Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.No AI service, AI library or AI model file195 code files read
Compatibility
See all 9 filesPoint at or tap a version to see its loaders.
Known conflicts
These projects do not work together with FermiumASM: their authors or FermiumASM's author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as FermiumASM, so you only need one.
Modpacks using this project
Find modpacks with it| Oct 2024 | 19 |
|---|---|
| Nov 2024 | 11 |
| Dec 2024 | 13 |
| Jan 2025 | 20 |
| Feb 2025 | 19 |
| Mar 2025 | 23 |
| Apr 2025 | 20 |
| May 2025 | 16 |
| Jun 2025 | 10 |
| Jul 2025 | 24 |
| Aug 2025 | 23 |
| Sep 2025 | 9 |
| Oct 2025 | 18 |
| Nov 2025 | 19 |
| Dec 2025 | 22 |
| Jan 2026 | 28 |
| Feb 2026 | 13 |
| Mar 2026 | 17 |
| Apr 2026 | 17 |
| May 2026 | 15 |
| Jun 2026 | 16 |
| Jul 2026 | 10 |
| Aug 2026 | 9 |
| Sep 2026 | 11 |
213 modpacks include FermiumASM in at least one of their versions. Here are the 30 most downloaded.
RLCraft Dregora2.1M downloadslast version with it 2 Dec 2025
Last Days of Humanity1.4M downloadslast version with it 29 May 2024
Rebirth of the Night (RotN)1.3M downloadslast version with it 2 Feb 2026
MineColonies: Dimensional Adventure1.2M downloadslast version with it 20 Sep 2024
Divine Journey 2965K downloadslast version with it 6 Jun 2026
Optimized fps732K downloadslast version with it 7 Aug 2025
Jurassic World Reborn II438K downloadslast version with it 9 Aug 2025
Optimized fps [(NEO)FORGE]433K downloadslast version with it 6 Aug 2025
Bleach Evolved247K downloadslast version with it 19 Oct 2026
等价无尽机械 - PeojectE Avaritia Create100K downloadslast version with it 26 Apr 2026Often in the same modpacks
Mods that modpacks often add together with FermiumASM. Share: how many of the modpacks with FermiumASM also have that mod.
FoamFixCModin 60% of the modpacks with FermiumASM
Particle CullingCModin 57% of the modpacks with FermiumASM
FastFurnaceBModin 53% of the modpacks with FermiumASM
AlfheimCModin 52% of the modpacks with FermiumASM
BetterFpsCModin 51% of the modpacks with FermiumASM
ChiselCModin 50% of the modpacks with FermiumASM
Universal TweaksAModin 48% of the modpacks with FermiumASM
VintageFixAModin 48% of the modpacks with FermiumASM
CoFH WorldDModin 45% of the modpacks with FermiumASM
FastWorkbenchBModin 45% of the modpacks with FermiumASMLatest files
The newest file for each Minecraft version and loader. None is for a recent Minecraft version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.