How much RAM does a Minecraft server need?

Find out how much RAM your Minecraft server needs based on version, player count, and plugins. Tables, tips, and requirements for 2026.

How Much RAM Does a Minecraft Server Need? (2026 Guide)

If you’re planning to run your own Minecraft server, one of the most important factors is the amount of RAM. It directly affects gameplay smoothness, reduces lag, and ensures server stability.

What Affects RAM Usage?

Memory usage depends on:

number of players
world size
plugins or mods
server software (Paper, Spigot, Forge)
generation of new chunks

The more players and add-ons → the more RAM you’ll need.

RAM vs Minecraft Version

Minecraft Server Version	Minimum RAM	Recommended RAM
1.8 – 1.11	1 – 1.5 GB	2 – 3 GB
1.12 – 1.15	1.5 – 2 GB	3 – 4 GB
1.16 – 1.17	2 – 3 GB	4 – 5 GB
1.18 – 1.20	3 – 4 GB	5 – 6 GB
1.21+	4 – 5 GB	6 – 8 GB

These values are estimates and may vary depending on configuration.

RAM vs Players, World, and Plugins

RAM	Players*	World Size*	Plugins / Mods*
2 GB	up to 5	up to 5 GB	up to 5
4 GB	up to 10	up to 10 GB	up to 20
6 GB	up to 20	up to 20 GB	up to 40
8 GB	up to 40	up to 40 GB	40+
10 GB	60+	up to 80 GB	50+
16 GB+	100+	100+ GB	heavy modpacks

approximate values

Plugins vs Mods

Plugins

lower RAM usage
better optimization
ideal for survival / minigames

Mods

significantly higher requirements
modpacks often require 8–16 GB
heavier server load

If you’re running a modded server → don’t go below 8 GB

How Much RAM Should You Choose?

friends (5–10 players) → 4–6 GB
public survival server → 6–8 GB
modpack / large project → 8–12 GB+

Is RAM Everything?

No.

Performance also depends on:

CPU (most important)
SSD/NVMe storage
server optimization

Lots of RAM + weak CPU = still lag

How to Reduce RAM Usage?

lower view-distance
remove unnecessary plugins
use Paper instead of Vanilla
pre-generate the map

Summary

Key takeaways:

don’t choose the bare minimum
leave some RAM headroom
mods require more than plugins
CPU is just as important as RAM