How Much RAM and CPU Does an ARK Ascended Server Need?
Size ARK Survival Ascended by map, world, players and mods using published baselines and a repeatable measurement method.
There is no single correct RAM value for every ARK Ascended server. The map sets a baseline, then players, structures, creatures, world age and mods increase load. The official community wiki recommends four logical cores per ASA instance and favours per-core performance because much gameplay remains constrained by one thread.
Published per-map baselines
The wiki publishes ranges for a fresh world, default settings and no connected players. They exclude the operating system and peak headroom:
| ASA map | Internal name | Idle new-world RAM |
|---|---|---|
| The Island | TheIsland_WP | 8–10 GiB |
| The Center | TheCenter_WP | 10.5–12 GiB |
| Scorched Earth | ScorchedEarth_WP | 7.5–9 GiB |
| Aberration | Aberration_WP | 8–10 GiB |
| Extinction | Extinction_WP | 7–8.5 GiB |
ARK wiki observations for a new empty save; use can vary during creature respawn and with available memory.
Do not buy 8 GiB merely because one lower bound is 8. The OS, database, players and peaks need headroom. The Center already starts higher than Extinction in these observations.
What consumes RAM and CPU
| Factor | Main impact | How to measure |
|---|---|---|
| Map | Memory baseline and active areas | Measure at idle after load completes |
| Structures and storage | RAM, saves and game thread | Compare old areas with a fresh world |
| Creatures and respawn | CPU and memory peaks | Observe after startup and controlled dino wipe |
| Dispersed players | Active areas, network and CPU | Measure at comparable population and time |
| Mods | RAM, CPU and startup time | Profile before/after a batch on a copy |
| Cluster | One complete process per map | Add every instance plus OS |
GPU power is not a dedicated-server sizing factor. Prefer high clock and single-core performance to many slow cores, while still reserving four logical cores per instance and avoiding too many maps on one host.
Size from real measurements
Build the target configuration
Measure after stabilisation
Exercise realistic use
Keep headroom
Review after growth
Signs the server is undersized
Exhausted RAM causes swap, pauses, crashes or forced restarts. One saturated core with free RAM instead causes delayed AI, slow interactions and long saves. Measure first: more memory does not fix a blocked game thread, and more cores do not fix weak per-core performance.
For clusters, size every map as an independent instance, then add OS and services. The ASA cluster guide covers storage and ports. The mod troubleshooting guide helps isolate an unusually expensive mod.
Frequently asked questions
Is 8 GB enough for ARK Survival Ascended?
How many CPU cores does ASA need?
Can I choose RAM from slot count alone?
Source for measurements and requirements: ARK Official Community Wiki — Dedicated server setup.
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