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Playing with friends? Godlike.Host runs hosted Arma Reforger servers from 10 data-center locations, with free DDoS protection.
For an Arma Reforger dedicated server, prioritize a fast single-thread CPU, enough RAM for your player count and mods, and SSD storage. Community estimates put a 32-player server around 8–10 GB of RAM and four strong CPU cores; 40–64 players commonly calls for 12–16 GB and six to eight modern, high-clocked cores. These are estimates, not official Bohemia Interactive requirements: as of 2026, Bohemia has published dedicated-server tools and hosting guidance but no verified hardware specification list.
What “Arma Reforger server requirements” actually means
Arma Reforger dedicated servers run headless, so they do not need a gaming graphics card or a monitor. Simulation work happens primarily on the CPU, while memory grows with connected players, AI and mods. Storage must be fast enough for the operating system, server files, workshop content, logs and updates.
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Quick sizing guide by player count
The table is a planning range, not a certification. Scenario complexity, AI numbers and mods can move a server into the next tier even when the player count stays the same.
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| Target population | CPU planning target | RAM planning target | Free SSD space | Upload guidance |
|---|---|---|---|---|
| Under 16 players | A modern CPU with strong per-core performance; community users report that most current CPUs cope with small groups | Not stated consistently; reserve headroom rather than sizing to the startup footprint | At least 20 GB; leave room for updates and workshop content | About 50 Mbps is common community guidance for a small, stable server |
| 16–32 players | About four strong, high-clocked cores | About 8 GB is the most frequently cited figure; another guide estimates 6–10 GB depending on scenario and mods | Roughly 25–40 GB is suggested by some guides | 50–100 Mbps upload, depending on traffic and headroom |
| 32–64 players | Six to eight modern cores with high single-thread performance | About 12–16 GB; 16 GB is the common estimate near 64 players | At least 50 GB free is prudent for larger or heavily modded installations | 100 Mbps is commonly described as a minimum; more is preferable for a public server |
| 64+ players or heavy AI/mod use | Use the fastest per-core CPU available and additional cores for concurrency; exact requirements are not established | Plan beyond 16 GB and monitor real usage; one forum participant considered 32 GB sufficient for one large instance, but that is a single user’s experience | Keep substantially more than 50 GB free for content and rollback space | A 1 Gbps connection is a better target for a busy public server |
Do not read the ranges as guarantees. A lightly modded 64-player scenario can be easier than a 32-player Campaign server full of AI. Conversely, a quiet private session may use much less than a public server with persistent workshop content.
Arma Reforger server CPU requirements
Why single-thread speed matters
Community testing and administrator reports consistently emphasize single-thread performance over a high core count. A server has simulation and networking work that benefits from a fast primary thread. More cores still help with operating-system tasks, networking, background services and some parallel work, but buying many slower cores is usually a worse choice than buying fewer fast ones.
CPU profiles that fit common deployments
- Small private groups: Most modern desktop or server CPUs can handle fewer than 10 players, provided the scenario is not overloaded with AI or scripts.
- 16–32 players: Aim for roughly four strong cores with high clock speed and good single-thread performance.
- 32–64 players: Six to eight modern cores are a sensible starting profile, with per-core speed still the priority.
- Mod-heavy or AI-heavy scenarios: Favor a newer Ryzen 5000/7000-class or newer Intel-class processor, as community users cite those generations for roughly 20–50-plus players with mods. This is a user recommendation, not an official compatibility list.
AI and bots change the calculation
Bots and AI can consume substantial CPU time. If server performance is poor while player count is modest, reduce AI counts or disable unnecessary bots before replacing hardware. This often reveals whether the bottleneck is simulation load rather than network capacity or memory.
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How much RAM does an Arma Reforger server need?
Understand the conflicting estimates
Community numbers vary by as much as twofold. One commonly repeated estimate is about 8 GB for approximately 32 players and 16 GB for approximately 64 players. Another guide puts a 32-player server at 6–10 GB and a 40–64-player Campaign or modded server at 12–16 GB. A separate report observed roughly 3 GB at startup before players and AI load. These figures measure different states, so none should be treated as a fixed minimum.
Budget for the workload, not the idle process
RAM usage rises with connected players, AI, map or scenario complexity, server-side scripts and workshop mods. For a new 16–32-player installation, 8 GB is a reasonable community-based starting point only if you can monitor usage and keep swap activity low. Move to 16 GB when targeting the upper end of 64 players, Campaign scenarios or a substantial mod set. If memory remains near capacity during peak use, add RAM before changing the CPU.
One Steam community participant reported that 64 GB was “more than enough” and that 32 GB could run one large instance. That is a single user’s observation, not a measured requirement or a guarantee for every scenario. Treat it as evidence that very large memory configurations may be unnecessary for one ordinary instance, not as a universal ceiling.
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Storage: use an SSD and leave working room
Community guides generally expect at least a 20 GB SSD installation, with NVMe preferred. Other estimates suggest 25–40 GB free for a 16–32-player server and 50 GB or more for larger servers. The spread reflects updates, workshop downloads, logs and retained files rather than a single executable size.
- Use an SSD; avoid hosting the live server from a mechanical hard drive.
- Prefer NVMe when the price difference is reasonable, especially for frequent mod updates or several instances.
- Reserve free capacity for patches, temporary files, logs and failed update rollbacks.
- Put logs and backups on a planned volume so they cannot unexpectedly fill the system disk.
There is no reliable single storage number that applies to every installation. Measure the installed game and workshop content, then add operational headroom rather than treating 20 GB as a lifetime allocation.
Network requirements for a dedicated server
Upload speed is the important ISP limit because the server sends state updates to every client. Community guidance commonly places a small stable server around 50 Mbps upload and describes 100 Mbps upload as a practical minimum. A 1 Gbps connection gives a busy public server more headroom. One forum user reported that 100 Mbps up and down was enough for about 50 players, but that is an individual observation under unspecified conditions.
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- Check the sustained upload rate, not the advertised download-only figure.
- Use wired Ethernet and avoid Wi-Fi for the host machine.
- Account for other household or server traffic; backups and video uploads can cause in-game loss even when average bandwidth looks adequate.
- Configure firewall and port forwarding according to the current official server documentation and your router’s interface.
Bandwidth alone does not guarantee a good session. Latency, packet loss, routing and CPU time spent producing simulation updates can all create rubber-banding or disconnects.
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GPU
No dedicated GPU is needed for a headless server. The server can run without rendering a game view, so spend the budget on CPU speed, RAM and reliable storage. A basic graphics adapter may still be useful for local administration or troubleshooting, but it is not a server-performance requirement.
Operating system
Community hosting guides list Windows 10 or 11, Windows Server 2019 or newer, and current Ubuntu LTS releases. Choose the platform your administrators can patch, secure and monitor. Keep the operating system, server binaries and mods on supported versions, because game updates can change resource use or compatibility.
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Self-hosting versus rented hardware
Home hosting lets you reuse an existing fast PC and control upgrades, but your ISP upload rate, carrier-grade NAT, power reliability and household traffic become part of the server’s availability. A rented machine can provide a datacenter connection and predictable uptime, while its CPU generation, storage performance and mod-management limits depend on the plan.
For either approach, ask for the actual CPU model, single-thread performance, guaranteed RAM, SSD type, upload capacity and traffic policy. A plan advertised with many virtual cores may perform worse than a smaller allocation on a newer, faster processor. Provider names and plan terms change, so evaluate the specification rather than relying on a brand label.
How to size a server step by step
- Set the peak concurrent player target. Size for the busiest expected session, not the average weekday population.
- List the scenario and mods. Campaign play, scripted missions, large maps and AI-heavy content can push CPU and RAM into the next tier.
- Select CPU speed first. For 16–32 players start around four strong cores; for 32–64, look at six to eight modern high-clocked cores.
- Install at least the appropriate memory tier. Use the 8 GB/32-player and 16 GB/64-player community estimates as starting points, then add headroom for mods and AI.
- Allocate SSD space. Start at 20 GB only for a minimal installation; 25–40 GB is more practical for 16–32 players, and 50 GB or more suits larger or mod-heavy servers.
- Verify upload capacity. Confirm that sustained upload is at least 50 Mbps for a small server and closer to 100 Mbps for a public deployment.
- Run a peak-load test. Have representative players join with the intended mods and AI. Watch CPU per-core utilization, total RAM, disk latency, network throughput and server tick or frame warnings.
- Keep an upgrade path. Leave an empty memory slot or choose a host that can raise RAM and CPU allocation without rebuilding the instance.
Performance tuning and troubleshooting
Players report stutter or slow simulation
- Check whether one CPU core is saturated while total CPU usage appears moderate; this points to the single-thread limit.
- Reduce AI and bot counts, then retest with the same player population.
- Remove or update the heaviest server-side mods and verify whether the problem follows a specific scenario.
- Move the installation to SSD or NVMe if disk latency spikes during saves, joins or content loading.
The process approaches the memory limit
- Compare idle, startup and peak-session memory; the startup figure alone is not a capacity test.
- Reduce mod count or scenario complexity temporarily to confirm the source.
- Add RAM before increasing the player cap. Paging to disk can turn a recoverable memory shortage into severe stutter.
Clients disconnect or experience rubber-banding
- Measure sustained upload and packet loss while the server is busy.
- Stop competing uploads, cloud synchronization and large backups during sessions.
- Use wired networking and inspect router firewall or port-forwarding rules.
- Check CPU saturation as well as bandwidth; a server that cannot produce updates on time can look like a network failure.
Updates or mods fill the disk
- Keep a free-space threshold and alert before the volume reaches capacity.
- Rotate logs and remove obsolete workshop versions only after confirming the server no longer needs them.
- Maintain a backup or rollback copy before large game or mod updates.
A practical buying checklist
- Fast single-thread CPU performance, with four strong cores for a typical 16–32-player target.
- Six to eight modern high-clocked cores when targeting 32–64 players or heavier scripts.
- At least 8 GB RAM for a monitored 16–32-player starting point; 16 GB for the upper 64-player range; more for unusually heavy AI or mods.
- SSD storage, preferably NVMe, with 25–40 GB free for a normal 16–32-player installation and 50 GB or more for larger deployments.
- At least 50 Mbps sustained upload for a small server and about 100 Mbps for a public one; 1 Gbps provides additional headroom.
- No performance GPU requirement.
- A supported Windows or Ubuntu LTS environment that you can patch and secure.
- Monitoring for per-core CPU load, RAM peaks, disk latency, upload use, packet loss and crash logs.
Because official hardware minima are not published in the available Bohemia Interactive material, treat these figures as starting estimates. Recheck the current official BIKI server-hosting page and retest after major game updates before expanding the player cap.
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