How Much RAM for a Minecraft Server? (Players and Mods)

For vanilla with friends, 8 GB (the Coal tier) leaves plenty of headroom. Add Paper plugins and you want 16 GB (Iron). For a modpack it depends on the pack: 24 GB (Gold) for a light one, 32 GB (Diamond) for a medium one. What runs on the server matters more than how many people join it.

Key takeaways

• Vanilla with friends fits comfortably in 8 GB (Coal); a Paper server with plugins belongs on 16 GB (Iron) from day one, even with only a few players.
• Player count weighs less than what's running: ten players on vanilla often use less memory than five on a modpack.
• For a modpack, the only truly reliable figure is the one on its CurseForge or Modrinth page, tested by the pack's authors.
• Past a certain point, more RAM stops helping. Picking the right plan beats picking the biggest one.

Vanilla: the smallest footprint, even with a crowd

A vanilla server is the lightest thing you can run. The Minecraft Wiki's dedicated server requirements list a few gigabytes for a handful of players on a Linux machine, the set-up a host uses rather than a desktop PC. Those figures are a floor, though: they cover the server process alone, before a single plugin, mod or growing world is added.

Minimum and recommended aren't the same thing. A server that technically starts on 2 or 3 GB will run into trouble as soon as players spread out, build farms and fill chests. That's why we treat 8 GB as the realistic starting point for a group of friends rather than the bare minimum from a table.

What you run	OnPowered tier	RAM
Vanilla, 1 to 10 players	Coal	8 GB
Vanilla with 10 to 20 players, or light plugins (Paper)	Iron	16 GB
Heavy plugins or a small modpack	Gold	24 GB
Medium modpack (100+ mods)	Diamond	32 GB
Large modpack (200+ mods)	Emerald	48 GB

These tiers barely move with game updates. New versions add content to the world, but the main game loop is still largely single-threaded: on pure vanilla it's mostly the CPU that feels the load, not the RAM.

With Paper plugins: why the bar jumps straight away

EssentialsX, LuckPerms, WorldGuard, a shop plugin: every active plugin adds its own memory use on top of the game engine. The official Paper documentation recommends at least 6 to 10 GB "no matter how few players", because the Java garbage collector works better with room to breathe. In practice, a Paper server with plugins sits on the Iron tier (16 GB), and that holds for three friends on a plugin-heavy survival world too.

The same documentation makes a simple point: set the minimum and maximum memory to the same value, so the garbage collector doesn't waste time resizing the heap mid-game. On the Pterodactyl panel used at OnPowered, you change this in the server's startup command, without editing a configuration file.

Modded servers: the pack decides, not a formula

There's no single number here. A modpack can be forty light mods, or three hundred mods running machines and entities non-stop. The only recommendation you can really trust is the one the pack's authors publish on its Modrinth or CurseForge page, tested by them, not guessed from an average.

As a rough guide, an exploration or magic pack often runs at around 6 GB, while a "kitchen sink" pack stacking dozens of tech and automation mods goes well past 10 to 12 GB. Always check the pack's page before choosing a plan; it beats any rule of thumb. Our guide to modded Minecraft server hosting covers the rest of what a modpack needs (Java version, loader, matching client mods).

Quick reference: server type by tier

Putting the above together, this is where most servers land once plugins or mods enter the picture. Player count shifts things by a tier at most; the software you run decides the rest.

Server type	OnPowered tier	RAM
Paper + light plugins	Iron	16 GB
Paper + heavy plugins (web map, logging, economy)	Gold	24 GB
Light modpack	Gold	24 GB
Medium modpack	Diamond	32 GB
Large "kitchen sink" modpack	Emerald	48 GB

Which OnPowered plan matches your needs

Once you know your range, the choice narrows quickly. The OnPowered Minecraft plans go from 8 to 48 GB, all on NVMe storage and with DDoS protection included. Every plan runs Java and Bedrock, and you can upgrade later without downtime or data loss, so starting one tier lower than you fear is a safe bet.

For a network running several servers at once (lobby, survival, minigames), a Minecraft Box splits RAM, disk and vCores between several worlds without paying for separate subscriptions. The Diamond Box, for example, gives you 32 GB and up to 7 simultaneous servers for €29.99 per month.

Not sure about your exact case? The Minecraft guide's plan simulator asks seven questions about your players, plugins and mods, then suggests a plan.

Too much RAM: the point where it stops helping

Beyond a certain threshold, adding RAM no longer does anything. The Paper documentation is blunt about it: going for 32 GB "just in case" mostly wastes money, because the Java garbage collector then manages a bigger heap with no real benefit for the players online. More memory only helps when the server is actually short of it.

If a server lags with plenty of RAM to spare, the cause is almost always elsewhere: entities piling up, hungry redstone, a view distance set too high, or chunks being generated as players explore. Our guide on how to reduce lag on a Minecraft server covers those causes, which are far more common than a simple lack of memory.

FAQ

How much RAM do I need for a vanilla server with friends?

For a handful of players on vanilla, the Minecraft Wiki puts the bare minimum at a few gigabytes on a dedicated Linux server. In practice, the Coal tier (8 GB) leaves room for player inventories, entities and a growing world without running into the ceiling, which is why we treat it as the realistic starting point.

Why does a Paper server with plugins need more RAM than vanilla?

Every plugin adds its own memory use on top of the game engine, and the Paper documentation recommends 6 to 10 GB however few players you have. A small group on Paper with several plugins is well served by Iron (16 GB). Squeezed into 2 GB, the same server suffers frequent garbage collection pauses and stutters.

How do I know how much RAM a modpack needs?

There's no universal rule: each CurseForge or Modrinth modpack shows its own recommendation on its page, tested by its creators. A light pack runs on around 4 to 6 GB, while a "kitchen sink" pack with several hundred mods often needs double that or more. Check the page before you pick a plan.

What happens if I give the server too much RAM?

Beyond a certain point, more RAM doesn't mean more performance. The Paper documentation warns that getting 32 GB "just in case" mostly wastes money, as the Java garbage collector has to manage a larger heap with no real gain for players. Fix lag sources like entities and view distance first.

Which OnPowered plan fits your server?

Vanilla with friends: Coal (8 GB). Paper with plugins: Iron (16 GB). Modpacks: Gold, Diamond or Emerald depending on the pack's own recommendation.

Free 7-day trial on the Minecraft plans, no commitment: start the trial. Full details: Minecraft plans.

See also

• Modded Minecraft server hosting: what it really takes
• How to reduce lag on a Minecraft server
• Free Minecraft server hosting: what you really get
• Minecraft hosting comparison

Now that you know how much RAM you need, a managed Minecraft server at OnPowered starts from €5.99 per month for 8 GB of DDR4 RAM, Pterodactyl panel included. For a plugin server, Iron (16 GB) at €11.99 per month is the sensible pick, and the 7-day free trial lets you check it handles the load. Order the Iron plan or compare all Minecraft plans.