How Much RAM Does an Ampz (Voltz for 1.21) Server Need? (2026)
Ampz is the spiritual successor to Voltz, rebuilt on NeoForge 1.21.1 with 27K downloads and the same nuclear-missile, power-plant, industrial-warfare energy that made the original famous. Check the Ampz (Voltz for 1.21) pack page for the full feature list, and use the tiers below to pick a RAM size before you deploy. 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 for a solo player or a tiny group poking around early-game machines. Expect tight memory headroom once a power plant or missile facility starts loading in.
6 GB
The best starting point for most Ampz servers. This matches the pack's own recommended floor and gives NeoForge 1.21.1 enough breathing room for the industrial power-generation and missile-crafting mods without constant garbage-collection stutter.
8 GB
Safer for a mid-size active group running multiple power plants, bases, and ongoing missile projects at once — the extra headroom absorbs the load spikes from simultaneous machine activity.
12 GB
For 10+ players or a long-running world with a sprawling industrial footprint — multiple reactors, launch complexes, and a world border that's grown well past spawn.
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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