
Uranium
Uranium tries to make Minecraft perform the best it possibly can.
About this Modpack
Uranium is a modpack I'm developing to improve Minecraft's performance as much as I possibly can.
Mostly developing for some of my friends who have issues with Minecraft's singleplayer performance. Some of them can't even hit 30 FPS in singleplayer, which is ridiculous.
⚙️ How Does Uranium Work?
Uranium works just the same as how Sodium works. It's a complete rewrite of the Minecraft rendering engine (well, Sodium is the rewrite, I'm just the pack dev) and the chunk engine(or whatever it is).
So you may be wondering, does this actually even work?
My answer is: It should.
I can't say for certain if it'll work for you or not. It should, as it rewrites Minecraft's rendering engine AND the chunk engine(?). But I'm hoping it does, as I practically made this modpack for one of my friends who struggles INSANELY with performance on singleplayer.
Uranium also comes with built-in shader support, as Iris is included.
Available Versions
How to Set Up a Uranium Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Uranium). Based on player count: per 8 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Uranium" and click "Install". The fabric loader and Minecraft 1.21.1 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
Uranium server crashes or won't start – what to do?
Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.
How much RAM does a Uranium server really need?
Minimum 4 GB, recommended 6 GB for stable performance. per 8 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).
Can I add custom mods to Uranium without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.1). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.
Uranium server lagging – performance tips
1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.
Similar Modpacks
Rent Uranium Server
Start your own server with automatic modpack installation.
Supported Versions
Start your Uranium Server now
From €8.00/month with 6 GB RAM for the best performance.
Configure Server →