Start with the game and how many people play at once
Player count matters, but it is only one part of sizing. Mods, plugins, world generation, automation, entity counts and game-specific simulation can change resource use dramatically.
Each game’s page has its own plans, and each plan lists how many players it is sized for. Those counts are a starting point for that game, not a promise that every third-party modpack will fit the same allocation.
What RAM does — and what it does not do
RAM gives the server room to keep active world data, plugins, mods and game state in memory. Too little can cause stalls, crashes or aggressive cleanup.
More RAM does not automatically fix a CPU-bound server. Tick-heavy Minecraft plugins, large simulation workloads and poorly optimized mods can bottleneck CPU long before memory is exhausted.
A safe way to choose
- Open your game’s page and scroll to Build your server.
- Pick the plan whose player count covers the most people who will play at the same time.
- Go one plan up, or choose Custom, if you already know the world, mods or plugins need more.
- Once the server is running, watch real memory and CPU behavior before paying for an upgrade.
ImportantRunic will not use an “unlimited RAM” label. Shared nodes have finite memory, storage and compute capacity.