All The Mods 10 (ATM10): Recommended RAM, Server Files & Setup
All The Mods 10 (ATM10) is one of the heaviest and most demanding modpacks available for Minecraft. If you're looking for "atm10 server files", wondering about the "all the mods 10 recommended ram", or attempting to "optimize all the mods 10", you are in the right place.
All The Mods 10 Recommended RAM
A common question: "How much RAM for ATM10 server?"
- Minimum: 8GB RAM (Only for 1-2 players, expects lag in late-game).
- Recommended: 12GB to 16GB RAM (For 5-15 players). At Space-Node, our MC Special 1 (12GB) and MC Special 2 (16GB) plans are specifically designed to handle ATM10 smoothly.
Downloading the ATM 10 Server Files
To install ATM10 manually on a VPS or dedicated server:
- Go to the ATM10 CurseForge page.
- Navigate to "Files" and download the specific "Server Pack".
- Extract the atm10 server files and run the
start.shorstart.batscript to let it download the necessary NeoForge libraries. (Note: At Space-Node, ATM10 is a 1-click install from the game panel).
ATM 10 JVM Arguments and Optimization
To avoid memory leak crashes, proper java arguments are required. Use Aikar's Flags for G1GC (Garbage Collection). Make sure you run Java 21, as Minecraft 1.21+ requires it natively.
For heavy chunk limits and world loading, utilizing high-speed NVMe drives is critical. Space-Node provides enterprise-grade NVMe storage ensuring blazing-fast chunk loading.
RAM by player count for ATM10
ATM10 ships with about 380 mods. Memory pressure scales with chunk-loaded entities and mod-defined data structures, not just players.
| Players online | Loaded chunks | RAM (server) | Notes |
|---|---|---|---|
| 1-3 | < 200 | 8 GB | comfortable |
| 4-8 | 300-500 | 10-12 GB | typical SMP |
| 8-15 | 500-800 | 14-16 GB | starts needing tuning |
| 15-25 | 800-1200 | 20-24 GB | mandatory chunk pre-gen |
| 25+ | 1200+ | 32 GB | use Chunky + spawn limits |
8 GB only works for 1-3 players because ATM10's ore generation, JEI cache, and Mekanism networks all hold long-lived structures.
JVM flags that actually help
-Xmx12G -Xms12G
-XX:+UseG1GC
-XX:+ParallelRefProcEnabled
-XX:MaxGCPauseMillis=200
-XX:+UnlockExperimentalVMOptions
-XX:+DisableExplicitGC
-XX:+AlwaysPreTouch
-XX:G1NewSizePercent=30
-XX:G1MaxNewSizePercent=40
-XX:G1HeapRegionSize=8M
-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
These are Aikar's flags, the de-facto standard for modded Minecraft. Set Xmx and Xms to the same value; G1 hates a growing heap.
Disk and CPU
| Resource | Minimum | Recommended |
|---|---|---|
| CPU clock | 4.0 GHz turbo | 5.0+ GHz (Ryzen X3D, Intel 13th gen) |
| Cores used by tick | 1 | tick is single-threaded; extra cores help GC |
| Storage | 50 GB SSD | 100 GB NVMe |
| Disk I/O | 5k IOPS | 50k+ IOPS |
ATM10 first-boot world generation writes 5-15 GB and triggers heavy I/O. SSDs cope; HDDs will bottleneck.
What runs out first if you under-provision
| Symptom | Reason |
|---|---|
| TPS drops to 15 with 4 players | CPU bound, single-thread is too slow |
| Hard freeze every 15 min | Full GC; Xmx too low |
| Slow chunk loading | Disk IOPS, switch to NVMe |
| Random "Connection Lost: Internal Exception" | network buffers under-tuned, see view-distance |
| Out of memory after 2 hours | leaking pet/animal entities, run /forge entitylist |
Pre-generation is mandatory above 5 players
/chunky radius 5000
/chunky start
Pre-generating a 5000-block radius around spawn cuts mid-game lag spikes by ~70 % on ATM10 servers we monitor.
