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How much power
does your server need?
Answer a few questions about your game – the calculator estimates memory, processor and storage. For Minecraft with modpacks, Rust and Satisfactory.
Based on memory, with all other settings unchanged.
How the requirement grows with more players
Recommended memory by number of players – all other settings stay the same.
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How the calculator works
What matters most for a game server is memory (RAM): it holds the game world, all players, buildings and mods. The calculator estimates the requirement from the factors that influence it most, adds 15% headroom for load peaks and rounds up to the next common size.
Minecraft
The server software and mods determine the base load – a large modpack needs several times as much as Vanilla. On top of that comes every player and the world around them; a far view distance loads much more of it. Lots of exploring and large farms add to it. Because Minecraft calculates most of the game world on a single processor core, a fast processor matters more than many cores.
The version matters too: older versions such as 1.12 need much less memory than current ones. A live map (BlueMap, Dynmap) renders the world in the background, crossplay via Geyser translates for Bedrock players, and in a network every server needs its own memory.
Rust
The map accounts for the largest share: bigger maps need more memory. Every day until the wipe adds buildings – more with many players and high gather rates. That’s why the recommendation plans for the end of the wipe, not the fresh server. Custom maps often add extra prefabs and monuments and need more memory than procedural maps.
Satisfactory
Here, the size of your factory matters most: every machine, conveyor belt and vehicle is simulated constantly. If you know the size of your save file, the calculator uses it as the most accurate guide. Lots of trains, drones and vehicles cost extra processing power.
File analysis
When you pick a modpack file, the calculator reads its table of contents right in your browser: name, mod loader, Minecraft version and number of mods. For Modrinth modpacks it only counts mods that run on the server – pure client mods such as shader loaders are left out. For Satisfactory it reads the size, session name and play time of your save. Your files never leave your computer.
Our game servers run on our own AMD Ryzen servers with fast NVMe SSDs. The recommendation is an estimate – every server is a little different. That’s why we look at every request personally.
FAQ
Questions about the calculator
How accurate is the recommendation?
It’s based on experience with typical servers. How much power your server really needs also depends on how you play – for example on individual mods, plugins or very large builds. That’s why we check every request personally and put together the right server.
What happens if my server doesn’t have enough RAM?
Things get tight: the server stutters, players experience lag, and in the worst case it crashes because memory is full. With Rust this often only shows towards the end of the wipe; with Minecraft when exploring or with many players.
Why does a modpack need so much more power?
Every mod brings its own blocks, items, mobs and mechanics that the server has to load and calculate. Large modpacks contain hundreds of mods – so the need for memory and processing power rises accordingly.
Why doesn’t the calculator just recommend as much RAM as possible?
Because more isn’t automatically better. What the server doesn’t use brings no benefit. With Minecraft, far too much memory can even lead to longer Java clean-up pauses. What matters is the right size – and a fast processor.
Is my modpack file or save uploaded?
No. The calculator reads the file only in your browser – it is neither uploaded nor stored. It only evaluates the table of contents and file size, for example the number of mods.
Do all players on my whitelist count?
No. For performance, only the number of players online at the same time counts. A whitelist with 30 names, of whom 8 play in the evening, is a server for 8 players.
Recommendation looks right?
Request your server – we’ll get back to you personally.