Quick answer: An ATM10 server needs 12-16 GB RAM, a high-clock Ryzen or modern Intel CPU, NVMe SSD storage, Java 21, and NeoForge support. For 5-10 players, start at 12 GB. For active groups or public servers, use 16 GB or more.
ATM10 requirements at a glance
| Component | Minimum | Recommended | Public / heavy server |
|---|---|---|---|
| RAM | 10 GB | 12-16 GB | 20-24 GB |
| CPU | 3.5 GHz+ | 4.5 GHz+ Ryzen/Intel | Dedicated high-clock cores |
| Storage | SSD | NVMe SSD | NVMe with backups |
| Java | Java 21 | Java 21 | Java 21 |
| Loader | NeoForge | NeoForge | NeoForge |
| Upload | 10 Mbps | 25 Mbps | 100 Mbps+ |
Why ATM10 needs more than vanilla
All The Mods 10 is a large kitchen-sink modpack with hundreds of mods, heavy startup, complex world generation, tech mods, automation, and extra dimensions. The server load comes from more than player count:
- Chunk generation while players explore
- Machines and cables ticking in loaded chunks
- Mob AI and modded entities
- Storage networks
- World saves and backups
- Dimension travel
- Java garbage collection pressure
That is why a 10-player ATM10 server can need more hardware than a 40-player vanilla SMP.
Recommended plan by player count
| Players | RAM | Notes |
|---|---|---|
| 1-3 | 10-12 GB | Works for testing or a small private world |
| 4-10 | 12-16 GB | Best range for most friend groups |
| 10-20 | 16-20 GB | Needs stricter pregeneration and backups |
| 20+ | 20-24 GB+ | Dedicated CPU strongly recommended |
Hardware that matters most
CPU single-core speed is the first bottleneck. Minecraft still depends heavily on one main server thread, and ATM10 adds more work around it. A modern Ryzen CPU beats older Xeon VPS cores even when the Xeon has more total cores.
NVMe storage matters because ATM10 saves and loads more data than vanilla. Chunk generation, modded structures, and backups are noticeably smoother on NVMe.
RAM should be enough, not absurd. Giving ATM10 32 GB when it only needs 14 GB can make garbage collection worse. Start with a sane heap, monitor, then adjust.
