RTX ON

Name: RTX ON
Price: 8 EUR
Author: blissful_

Add real hardware-accelerated raytracing to Minecraft!

by blissful_

33 Downloads

0 Followers

fabricMC 1.21.4lightweightoptimization

Rent RTX ON Server

About this Modpack

RTX ON 1.0.0 - Minecraft Raytracing

Turn your vanilla Minecraft 1.21.4 into a stunning cinematic masterpiece with true ray-traced lighting. Powered by Radiance + optimized performance mods (Sodium, Lithium, C2ME, ImmediatelyFast & more), enjoy breathtaking global illumination, realistic shadows, reflections, PBR textures, and dynamic lighting.

Highlights:

Gorgeous ray-traced GI, caustics & volumetric effects
Extreme performance optimizations for smooth gameplay
Enhanced sound physics with realistic occlusion & reverb
Entity & block culling, 3D skin layers, and more

Perfect for immersive survival, epic builds, and jaw-dropping screenshots. Light up your blocky world like never before!

Available Versions

RTX ON 1.0.0release

MC 1.21.4fabric33 downloads

June 11, 2026

How to Set Up a RTX ON Server

Order Server

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

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "RTX ON" and click "Install". The fabric loader and Minecraft 1.21.4 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

RTX ON 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 RTX ON 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 RTX ON without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.4). 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.

RTX ON 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.