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Short answer: Steam lists 8 GB of RAM and an Intel Core i5 9th-generation-or-similar processor as the minimum for running Abiotic Factor, with 16 GB of RAM and an i5 11th-generation-or-similar processor recommended. Those figures describe the player’s PC, not a guaranteed dedicated-server specification. Steam also warns that hosting multiplayer needs somewhat more CPU, especially with several players.

The official dedicated-server guide explains installation, launch parameters and networking, but does not publish a minimum server RAM, CPU or bandwidth figure by player count. You therefore need to treat the Steam figures as a starting reference, then monitor the actual host under your intended player load.

What Abiotic Factor’s published requirements actually cover

The requirements shown on the Abiotic Factor Steam listing are for the computer running the game client. They are useful when one person is playing and hosting from the same PC, but they should not be copied into a dedicated-server specification sheet.

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Use case RAM listed by Steam CPU listed by Steam What the figure means
Minimum game-client requirement 8 GB Intel Core i5 9th generation or similar Baseline for running the game client according to the current Steam listing.
Recommended game-client requirement 16 GB Intel Core i5 11th generation or similar Steam’s recommended specification for the client, not a dedicated-server guarantee.
Hosting a multiplayer session Not separately stated “There are slightly higher CPU requirements if you are the Host in a multiplayer session, especially with several players.” Steam identifies extra CPU demand but gives no host-specific processor model or player-count benchmark.

“Similar” does not mean that any processor with the same number of cores will perform identically. Generation, per-core performance, background software and the load from other services all affect the result. If you are playing and hosting on one machine, the recommended client specification is a more sensible starting point than the minimum, but it still is not an official dedicated-server minimum.

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Is there an official dedicated-server RAM or CPU requirement?

No. The dedicated-server maintainer guide does not state a minimum amount of RAM, a minimum CPU model or a bandwidth requirement tied to a specific number of players. It also does not turn the 8 GB and 16 GB Steam figures into server targets.

This distinction matters because a dedicated server has a different workload from a client. It must keep the world simulation running, accept connections and write logs while the operating system and any other services consume resources. Conversely, a machine that only runs the server does not need to render the game’s graphics. Without an official benchmark, assigning a precise “X GB per player” or “Y cores for six players” rule would be speculation.

How to size a machine responsibly

  1. Define the deployment. Decide whether the same PC will render the game and host, whether a second computer will run only the server, or whether the server will be rented.
  2. Start from a known client baseline when applicable. For a combined play-and-host PC, use at least the recommended 16 GB client memory and i5 11th-generation-or-similar CPU as a planning reference. This is a client requirement, not proof that a standalone server needs those exact parts.
  3. Allow operating-system headroom. Do not allocate all available memory to the game process. Leave room for the OS, remote administration and monitoring.
  4. Test at the real load. Have the intended number of players connect, travel through the world and perform normal activities while you watch CPU utilisation, memory use, disk activity and log output.
  5. Increase resources based on the bottleneck. Sustained CPU saturation calls for faster processor capacity; memory pressure calls for more RAM; connection failures require network or firewall investigation rather than automatically buying more memory.

Keep a record of the game version, operating system, player count and other services during testing. The result is an operational capacity estimate for your setup, not a universal specification for every server.

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Installing a dedicated server on Windows

The maintainer guide describes the dedicated-server tool as currently available for Windows. It offers two installation routes: install it through the Steam client or download it with SteamCMD. Labels and package details can change with game updates, so use the current guide’s entries when selecting the tool.

Steam client route

  1. Open the Steam client and sign in to the account used for server installation.
  2. Use the Library’s tools or software filter to locate the Abiotic Factor dedicated-server tool described by the maintainer guide.
  3. Install it to a drive with enough free space for the server files, logs and future updates.
  4. Start the server executable once so it can create its initial configuration and log files.

SteamCMD route

SteamCMD is useful on a Windows machine that will run the server without the full Steam client. Install SteamCMD, authenticate as required by the current distribution method, select the dedicated-server app identified in the maintainer documentation, and install it into a directory you control. Keep the installation path free of restrictive permissions so the process can write configuration and logs.

Example launch parameters

The guide’s example uses the following settings:

-MaxServerPlayers=6 -PORT=7777 -QueryPort=27015

It also demonstrates setting a server name and passwords. Treat these values as examples for the release documented by the guide. In particular, -MaxServerPlayers=6 limits the example to six players, -PORT=7777 selects the game port, and -QueryPort=27015 selects the query port. Confirm the syntax and defaults after every game update before reusing an old shortcut or script.

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Network ports, firewall and internet access

A server that works for players on the same local network may still be unreachable from the internet. The guide identifies UDP 7777 as the default game port and discusses forwarding ports on a router. Configure the host firewall and router consistently with the ports in your launch command.

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  1. Choose the game and query ports in the server configuration.
  2. Create inbound firewall rules for the required protocol and port on the Windows host.
  3. Forward the game port, including UDP 7777 when using the documented default, from the router to the server’s local IP address.
  4. Forward any additional query port required by your chosen configuration, such as 27015 in the example.
  5. Give the server a stable local address, preferably through a DHCP reservation, so a router rule does not point to a different machine later.
  6. Start the server and inspect its console or log output for successful binding and startup.
  7. Test from outside the host’s local network. A local connection alone does not prove that internet forwarding is correct.

Do not expose administrative passwords in public scripts or screenshots. If your internet provider uses carrier-grade NAT or blocks inbound traffic, conventional port forwarding may not work; that is a connectivity limitation, not evidence that the server needs more RAM.

Can you run an Abiotic Factor server on Linux?

The maintainer guide states that the dedicated-server tool is currently available for Windows and points Linux users toward community approaches. That wording describes the guide’s support status; it does not establish that every Linux workaround is impossible.

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A Linux administrator should therefore distinguish between an officially documented Windows deployment and an unofficial compatibility setup. Community methods may involve a Windows compatibility layer and can break when the game server or its dependencies change. If you choose that route, verify that the current server build starts, accepts connections, writes saves and shuts down cleanly before relying on it for a persistent world. For predictable support, use the documented Windows environment unless the current maintainer guidance changes.

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Self-hosting versus renting a game server

Neither choice is universally better. The right option depends on whether you value control and low direct cost over convenience and continuous availability.

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Decision factor Self-hosting Rented server
Hardware responsibility You provide the Windows machine, storage, power and a network connection. The provider supplies the machine; you still need to check its current Abiotic Factor support.
Administration You install updates, configure launch parameters, inspect logs and troubleshoot the router and firewall. The provider handles the underlying machine, while you manage the game settings allowed by its control panel.
Availability The world is available only while your machine and connection are running, unless you schedule it otherwise. Designed for a persistent service, subject to the provider’s maintenance and outage policy.
Control Full access to files, processes, ports and backups. Control depends on the plan, panel and access the provider supplies.
Cost Uses hardware and electricity you already own, but may require upgrades or a better connection. Requires recurring payment; current prices, slot limits and included features vary.
Player capacity Limited by your measured CPU, memory, network and connection stability. Limited by the selected plan and the provider’s supported slot count.

Choose self-hosting when

  • You already have a Windows machine that can remain powered when players want to connect.
  • You want direct access to configuration files, logs and backups.
  • You are comfortable forwarding ports and maintaining updates.
  • Your group can tolerate downtime when the host machine is offline.

Choose a rental when

  • The world must remain available even when no player’s home PC is running.
  • You do not want to administer Windows, firewall rules or router forwarding.
  • You prefer a predictable recurring charge to buying or maintaining hardware.
  • The provider confirms support for the current game version and the number of player slots you need.

Before paying, verify the provider’s current game support, maximum slots, backup policy, update timing, geographic location and cancellation terms. The maintainer documentation does not endorse a particular provider or establish a standard rental price.

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If you decide to rent, Godlike.Host offers Abiotic Factor servers with its own game panel, up to three free backups a day with restore, and 24/7 support by live chat or ticket; see the current plans. Not on the Abiotic Factor dedicated server wiki’s list of Verified Server Providers (github.com/DFJacob/AbioticFactorDedicatedServer, 10 Oct 2026).

Diagnosing common hosting problems

The server process will not start

  • Check that the dedicated-server files are complete and that the executable is being launched from the intended installation directory.
  • Review the latest log for missing files, invalid parameters or a port already in use.
  • Remove one recently added launch option at a time to identify a syntax or version mismatch.
  • Confirm that the Windows account running the service can write saves and logs.

Players cannot connect from the internet

  • Confirm the server is listening on the same game port configured in the launch command.
  • Check Windows Firewall and router forwarding, including UDP 7777 when using the documented default.
  • Verify that forwarding points to the host’s current local IP address.
  • Test from a separate internet connection instead of relying only on a local-network test.
  • Investigate carrier-grade NAT or inbound filtering if the configuration is correct but the port remains unreachable.

The host becomes unstable with several players

  • Watch CPU usage while the group is connected; Steam specifically warns that host CPU demand rises with several players.
  • Close unrelated workloads and compare performance with the server running alone.
  • Monitor memory and disk activity rather than assuming the client’s 8 GB minimum is sufficient for hosting.
  • Reduce the player cap temporarily and repeat the same activity to determine whether load is the trigger.

Operational checklist for a persistent world

  1. Record the game and server-tool versions before updating.
  2. Back up world and configuration files before applying an update or changing launch parameters.
  3. Keep the server name, passwords and player cap in a documented configuration file.
  4. Review logs after every restart and after a player reports a failed connection.
  5. Confirm that firewall and router rules still point to the correct machine.
  6. Test a client connection after maintenance rather than assuming the process stayed reachable.
  7. Measure resource use at the largest player count you intend to support.

The most defensible requirement for your installation is the capacity you can reproduce under that test, with headroom for the operating system and normal administration. Published Steam client figures are valuable reference points, but they are not a substitute for a dedicated-server benchmark.

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