How Much RAM Does a KZN SMP Server Need?
KZN SMP is a Fabric 1.21.1 medieval survival pack with custom world generation and a skill progression system, and it's built with heavy optimization rather than kitchen-sink bloat — see the KZN SMP pack page for the full details. Even so, the pack's own recommended floor is 5 GB, and the right amount of RAM still depends on how many players are actually online. 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 world or a tiny two-player group. It's below the pack's own recommended floor, so expect tighter headroom and more risk of tick lag once the custom world generation or skill progression system has to do real work.
5 GB
The best starting point — this matches KZN SMP's own recommended RAM floor on Fabric 1.21.1. It gives the custom world generation and skill progression system enough headroom to run smoothly for a small to mid-size SMP.
8 GB
A safer choice for a mid-size active group. KZN SMP is well-optimized, but more players exploring the custom-generated world and triggering skill progression events at once means more sustained load than the 5 GB floor was sized for.
10 GB
Recommended for 10+ players or a long-running world. As the custom world grows and more players accumulate skill progression, a larger allocation keeps tick times stable instead of degrading over weeks of play.
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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