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Dedicated Game Server RAM & CPU Calculator

Calculate exact VPS RAM requirements, dedicated CPU threads and optimized startup scripts (Aikar's Flags) for Minecraft, Palworld, Rust, ARK and multiplayer game servers.

Parameters & Controls

Game & Server Engine

Concurrent Online Players20 slots

Installed Mods / Plugins Count15

Simulation / View Distance10 chunks

Host Operating System

World Pre-generationChunks generated prior to launch to stop chunk-generation lag spikes.

Telemetry Console & Results

64-bit IEEE 754

Recommended Total VPS / Dedicated RAM

8GB RAM

For 20 online players on Minecraft (Paper / Purpur / Spigot)

Heap Allocation of Total RAM56%

Detailed Mathematical Breakdown

Dedicated Heap Memory (-Xmx)Engine world & entities allocation

4.5GB

Operating System OverheadBase system memory

1.5GB

GC Headroom & Metaspace BufferOut-of-memory prevention margin

0.7GB

Recommended CPU ThreadsParallel entity & networking execution

2vCores

Estimated NVMe StorageRegion chunks & rolling backups

23GB

Minimum Outbound Upload SpeedPacket synchronization headroom

9Mbps

Applied Equation (Live Input):

RAM_VPS (8 GB) = Heap (4.5 GB) + SO (1.5 GB) + Buffer_GC (0.7 GB)

Precalculated Engineering Configurations & Benchmarks

Direct access to high-intent hardware and game configurations with verified mathematical solutions:

RAM & CPU Sizing for Minecraft Paper Server (20 Players)

Calculate exact RAM and CPU for a 20-player Minecraft Paper server with 15 plugins. 6GB Heap, Aikar's Flags and 8GB VPS recommendation.

RAM Requirements for 100+ Mods Minecraft Server (Forge / Fabric)

Size RAM for heavy Minecraft modpacks (All The Mods, Better MC). 10GB–12GB Heap allocation and 16GB VPS with high-speed NVMe storage.

Palworld Dedicated Server RAM & Hardware (32 Players)

Hardware requirements for a 32-player Palworld server. Why you need 24GB to 32GB RAM to mitigate Unreal Engine 5 server memory leaks.

Technical Methodology & Reference Guide

Running a high-tickrate game server requires precise segregation between the JVM heap (or native game engine process) and the host operating system. Allocating 100% of available physical RAM to the game server is the single most common cause of spontaneous server crashes via the Linux kernel Out-Of-Memory (OOM) killer.

Optimized Startup Script (start.sh)

#!/usr/bin/env bash
# FaroTrend Automated Server Launcher (Minecraft (Paper / Purpur / Spigot))
# Target Allocation: 4G Heap | Java 21+ Recommended
java -Xms4G -Xmx4G \
  -XX:+UseG1GC \
  -XX:+ParallelRefProcEnabled \
  -XX:MaxGCPauseMillis=200 \
  -XX:+UnlockExperimentalVMOptions \
  -XX:+DisableExplicitGC \
  -XX:+AlwaysPreTouch \
  -XX:G1NewSizePercent=30 \
  -XX:G1MaxNewSizePercent=40 \
  -XX:G1ReservePercent=20 \
  -XX:G1HeapWastePercent=5 \
  -XX:G1MixedGCCountTarget=4 \
  -XX:InitiatingHeapOccupancyPercent=15 \
  -XX:G1MixedGCLiveThresholdPercent=90 \
  -XX:G1RSetUpdatingPauseTimePercent=5 \
  -XX:SurvivorRatio=32 \
  -XX:+PerfDisableSharedMem \
  -XX:MaxTenuringThreshold=1 \
  -Dusing.aikars.flags=https://mcflags.emc.gs \
  -Daikars.new.flags=true \
  -jar server.jar --nogui

Authoritative Standards & Scientific Documentation:

PaperMC Community Standards

Aikar's Modern JVM Garbage Collection Tuning Flags for Game Servers

G1GC garbage collection pause optimization sustaining stable 20.0 server TPS.

Oracle Corporation

Oracle HotSpot Virtual Machine Memory Management Whitepaper

Heap sizing and native Metaspace allocation guidelines in modern Java 21 LTS.

Frequently Asked Technical Questions

Why should you avoid assigning more than 12GB RAM to Paper?

An oversized heap increases JVM Garbage Collector sweep times, creating noticeable server freeze ticks during generation cleanup.