How Much RAM Does a Techopolis 3 Server Need?
Techopolis 3 is a NeoForge 1.21.1 city-builder tech pack — see the Techopolis 3 pack page for the full mod list — where the goal is a working city of power grids, factories, transport networks, and urban infrastructure built with Create, Applied Energistics, and refined pipes. That city-wide scope, rather than a single contained automation tree, is what drives the RAM tiers below. Finnish players: Minecraft-palvelin hosting is our native-language page. German players: Minecraft-Server mieten covers the same hosting auf Deutsch. Svenska spelare: Hyra Minecraft-server täcker samma hosting på svenska.
4 GB
Bare minimum, solo testing only. You'll see pressure the moment a power grid or AE2 network starts running alongside Create contraptions — fine for peeking at the pack, not for a real city.
8 GB
The best starting point for most servers. This matches Techopolis 3's own recommended floor and covers a solo or small-group city with power, factories, and transport networks running without constant memory pressure.
12 GB
Safer for a mid-size active group building out multiple districts at once, where Create automation, AE2 storage networks, and refined pipes logistics are all running in parallel across a larger city footprint.
16 GB
For 10+ players or a long-running world with a sprawling city — multiple factories, dense transport networks, and a world that's been chunk-loading a wide area for weeks without a fresh reset.
Want a faster estimate?
Use CoalHost's RAM calculator, then start from the plan that matches your player count and expected world activity.
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