Rendarium

Name: Rendarium
Price: 8 EUR
Author: raelmc

Rendarium is a client-side modpack focused on improving rendering performance and smooth gameplay in Minecraft.

by raelmc

195 Downloads

0 Followers

fabricMC 1.21.8combatlightweightoptimization

Rent Rendarium Server

Screenshots

About this Modpack

Rendarium Logo

⚠️Rael no longer maintains this modpack. Leo is now the only maintainer.⚠️

Rendarium is a performance and utility-focused modpack for Minecraft 1.21.5, 1.21.7 and 1.21.8 (planned versions: all above 1.21), made for SMP, PvP, smooth gameplay and high Performance.

Built on modern Fabric Versions, it boosts FPS, improves UI & combat, and enhances your multiplayer experience without adding extra content or worldgen.

✅ Key Features

💨 FPS Boost & Lag Reduction
🌈 Shader Support
🌍 Insane Render Distance with no performance cost
📦 Ingame Resourcepack, Datapack & Shader Downloader + Updater
🎨 Ingame Vanilla Tweaks Texture Pack Downloader & Editor
🔧 All necessary Optifine Features (Fabric replacement)
⚔️ PvP-Optimized HUD & Tools
🛠️ Combat, Movement & Utility Mods
🎙️ Voice Chat & Replay

🔥 Additional Features

🛰️ Freecam & Freelook
👤 Ingame Account Switcher
🧊 3D Skin Layers
💬 Chat Heads
🔗 Connected Textures
🧩 Axiom & WorldEdit
📐 Litematica
🗺️ Worldmap & Minimap
🎞️ Chat Animations
🖥️ Better F3 (Debug Screen)
🛡️ PvP Tiers
❤️ Health Indicators
🔍 Zoom

📌 Use Cases

• Great for SMP with voice chat
• Ideal for PvP players
• Smooth gameplay on low-end to high-end PCs
• Clean and modular client-side experience

❗️ Notes

No worldgen/content mods(no new blocks, mobs, biomes, structures, items, etc...) → only utilities & optimization
Works on most server Versions with ViaFabric+
It's a full client side Modpack

⚠️ Disclaimer ⚠️

Not all mods included in this modpack are allowed on every server. Please check the server rules or contact the server owner to see which mods are allowed and which are not.
You can disable each mod in the modmenu config if needed.

Potentially disallowed mods on some servers include:

Health Indicators

🤝 Community Support

Rael Studios Projekt Page

Available Versions

Rendarium 1.0.0-fabricrelease

MC 1.21.8fabric33 downloads

December 26, 2025

How to Set Up a Rendarium Server

Order Server

Choose at least 4 GB RAM (6 GB recommended for Rendarium). Based on player count: per 8 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Rendarium" and click "Install". The fabric loader and Minecraft 1.21.8 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

Rendarium 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 Rendarium 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 Rendarium without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.8). 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.

Rendarium 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.