CoreX

Name: CoreX
Price: 8 EUR
Author: axissq

CoreX is a Minecraft 1.21.5 build that enhances your gameplay with carefully selected QOL mods.

by axissq

231 Downloads

0 Followers

fabricMC 1.21.5lightweightmultiplayeroptimization

Rent CoreX Server

Screenshots

About this Modpack

CoreX - is a powerful and dynamic Minecraft 1.21.5 build that retains the essence of the classic gameplay while adding client-side mods to enhance performance, convenience, and visuals. Designed for players who want to maximize their Minecraft experience without altering the core mechanics, it’s perfect for both single-player and multiplayer sessions. The build features carefully selected mods that optimize client performance and improve stability, all without disrupting the vanilla atmosphere. Build, explore, conquer — all the possibilities of the game are unlocked in CoreX.

Simply Optimized - 281 FPS max

CoreX - 370 FPS max

Recommended resourcepacks:

Vanilla Evolved

Darked

Fontolith

Recommended JVM Arguments:

-Xmx6G -Xms6G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1MaxNewSizePercent=60 -XX:G1HeapRegionSize=32M -XX:G1ReservePercent=15 -XX:MaxGCPauseMillis=100 -XX:+ParallelRefProcEnabled -XX:+AlwaysPreTouch -XX:+UseStringDeduplication

Mods

ScalableLux

3DSkinLayers

AlinLib

AppleSkin

BadOptimizations

ChatAnimation

ClothConfig

C2ME

CustomFOV

Debugify

DynamicCrosshair

EntityCulling

FabricApi

FabricLanguageKotlin

FerritCore

StarHUD

Zoomify

ImmediatelyFast

IrisShaders

KelUI

Krypton

Lithium

MinecraftCursor

ModMenu

Puzzle

ReesesSodiumOptions

ScoreboardOverhaul

Sodium

SodiumExtra

TextPlaceholder

ThreadTweak

VeryManyPlayers

ViaFabricPlus

YetAnotherConfigLib

PlaceholderApi

Minimum requirements:
CPU: 2 cores, 4 threads.
RAM: 4 GB of memory.
Storage: 2 GB of free disk space.
GPU: Integrated with the processor.

maxfps

Available Versions

CoreX 0.21beta

MC 1.21.5fabric85 downloads

May 21, 2025

CoreX 0.2beta

MC 1.21.5fabric35 downloads

May 19, 2025

CoreX 0.1beta

MC 1.21.5fabric35 downloads

May 18, 2025

CoreX 0.02alpha

MC 1.21.5fabric42 downloads

May 17, 2025

CoreX 0.01alpha

MC 1.21.5fabric33 downloads

May 13, 2025

How to Set Up a CoreX Server

Order Server

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

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "CoreX" and click "Install". The fabric loader and Minecraft 1.21.5 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

CoreX 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 CoreX 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 CoreX without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.5). 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.

CoreX 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.