20 players
Start around 4 GB for a small vanilla or lightly modded community. Leave headroom for the operating environment and monitor real peak usage during saves and restarts.
50 players
Plan around 6–8 GB for a typical modded server. Large maps, plugins that cache player data and high entity counts can require more.
100 players
Start around 10–16 GB and prioritise CPU performance as much as memory. Load-test your exact map and plugin set; a nominal slot count does not predict simulation cost.
Measure rather than guess
Record memory after startup, at normal peak, during saves and after long uptime. Upgrade before sustained use approaches the limit. An out-of-memory kill risks an abrupt stop and data loss.
Official references
Smartly Dressed Games: Setting up a Server · Server Configuration
Plan calculator · Migration wizard · Free trial
Deploy Unturned with stated resource limits, Workshop tools and scheduled backups.
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