How much RAM does an ATM9 server need?
An ATM9 server needs about 13 GB of RAM for five players, 18 GB for ten and 28 GB for twenty. All the Mods 9 loads more than 400 mods on the server, so it needs about 8 GB before anyone places a block, and every player adds about 1 GB for the chunks, machines and mobs around them. That is our rule for large kitchen-sink packs. It sits at the careful end on purpose, because an ATM9 server that runs out of memory does not slow down, it crashes.
| Players online | RAM needed | Plan size | Lowest price for that size |
|---|---|---|---|
| 2 to 5 | 13 GB | 16 GB | CheapestMinecraftHosting Pro, €12.80 a month in Poland (Warsaw) |
| 6 to 10 | 18 GB | 24 GB | CheapestMinecraftHosting Crew, €19.20 a month in Poland (Warsaw) |
| 11 to 20 | 28 GB | 32 GB | CheapestMinecraftHosting Guild, €25.60 a month in Poland (Warsaw) |
Astroworld Hosting, which counted 432 mods in the newest release, lists ATM9 at 8 GB for up to three players, 10 GB for four to eight and 14 GB for larger groups, and tells groups that build big to read the row below their own. Our numbers already include that room.
ATM9 server requirements
An ATM9 server needs Forge for Minecraft 1.20.1, Java 17, a fast processor core and NVMe storage. Java is set for you by the hosts we compare. The core matters because Mekanism ore lines, Applied Energistics 2 and Refined Storage networks and every mob farm run on the main thread twenty times a second. Two things push the load up faster than most groups expect: mob farms that keep crowds alive in one spot, and FTB Chunks, which lets teams force-load their base so its machines run while nobody is there.
How to make an ATM9 server
An ATM9 server takes four steps, and the first start is the slow one:
- Order a plan with 16 GB or more for up to five players, with Forge as the server software.
- Install the pack from the panel. Astroworld Hosting and Lodehost install CurseForge modpacks in one click, and Cheapest Minecraft Hosting from its Mods tab. Pick All the Mods 9, not ATM9 To the Sky, which is a separate skyblock pack.
- Start the server and wait. The first start of a 400-mod pack takes several minutes while every mod registers its blocks and recipes.
- Give your players the address. They install All the Mods 9 in the same version from the CurseForge app and join.
ATM9 server files and server pack
The ATM9 server files are the server pack the ATM Team publishes with each release on CurseForge, with the configs and without the client-only mods. A one-click installer downloads it for the version you choose. Updates to ATM9 have slowed since ATM10 took over as the active pack, so the mod list barely moves any more, which makes ATM9 a calm pack to run for a long world.
ATM9 or ATM10 for a server?
Choose ATM10 for a new world and ATM9 if your group already has a world on it or wants the 1.20.1 mods. ATM10 is the same idea on NeoForge 1.21.1 and still gets regular updates; ATM9 stays on Forge 1.20.1. Both need about the same RAM by our rule. A world does not move from one pack to the other. ATM10 is compared on ATM10 server hosting.
How to keep an ATM9 server fast
- Profile before you upgrade. The pack includes spark, which shows the block or mob that takes the time.
- Keep force-loading modest. Set the FTB Chunks limit per player in the world's server config.
- Pre-generate the world before players spread out, so the server is not building modded chunks while they explore.
- Restart once a day to clear memory that a large pack slowly fills.
Best ATM9 server hosting plans
The best ATM9 server hosting for a group of five is a 16 GB plan, and 24 GB for ten.
For 2 to 5 players with a large modpack on Java in Poland (Warsaw), the finder recommends Astroworld Hosting Advanced Performance: 16 GB, AMD Ryzen 9 7950X, DDR5, for €40.95 a month when you pay monthly. As a new customer you pay €16.38 a month for the first 3 months, 60% off. The best plans at the other two hosts are Lodehost Premium at €46.95 and CheapestMinecraftHosting Pro at €12.80.
| If you want | Host and plan | Memory | Processor | Location | Per month |
|---|---|---|---|---|---|
| Lowest price | CheapestMinecraftHosting Pro | 16 GB | AMD Ryzen 9 7950X, DDR5 | Poland (Warsaw) | €12.80 |
| Balanced | Astroworld Advanced Performance | 16 GB | AMD Ryzen 9 7950X, DDR5 | Poland (Warsaw) | €40.95 (€36.95 on 24 mo) New customers: €16.38 a month for the first 3 months, 60% off |
| More performance | Astroworld Advanced Performance | 16 GB | AMD Ryzen 9 7950X, DDR5 | Poland (Warsaw) | €40.95 (€36.95 on 24 mo) New customers: €16.38 a month for the first 3 months, 60% off |
For up to five players, CheapestMinecraftHosting Pro has 16 GB for €12.80 a month, and Astroworld Advanced Performance gives you 16 GB with reserved Ryzen 9 threads for €40.95. For ten players, CheapestMinecraftHosting Crew has 24 GB for €19.20. More large packs are on Minecraft modpack server hosting.