How much RAM does a Space Engineers server need?
Space Engineers simulates physics on every block of every grid, which makes it one of the most expensive games here per player.
Recommendation
You need a server with at least
8GB
- Engine / Base OS:
- 6 GB
- Player Overhead:
- +1.6 GB
- Estimated Raw Usage:
- 7.6 GB
- Suggested cores:
- 6
- Disk to allow:
- 20 GB+
Per-block physics on every grid; abandoned ships keep costing CPU until they are cleaned up.
View 8GB PlansWhat actually drives Space Engineers memory use
A ship or station is not a single object — it is a structure of individually simulated blocks with mass, integrity and connections. Large grids are therefore expensive to hold and expensive to update, and the cost stays even when their owners are offline. Mods that add block types raise the baseline before anything is built.
The mistake to avoid
Letting grid count grow unchecked and adding memory to compensate. Cleaning up abandoned ships and debris does more for a struggling Space Engineers server than any upgrade, because unowned grids keep being simulated.