FN FRAGNODE
VI
MENU
RAM Workbench Game Blueprints 4-Zone Methodology Rig Notes About Contact
BEPINEX CO-OP • UDP 2456-2457 • 2026-11-12

FragNode Valheim Dedicated Co-op & BepInEx Sizing Blueprint

Iron Gate Valheim dedicated servers persist terrain modifications and relay zone state across UDP ports 2456–2457, requiring 6 GB to 12 GB of host RAM for modded BepInEx worlds plus uncapped 256 KB/s network send buffers for large stone fortresses.

FragNode Valheim tip: omit -crossplay for Steam-only squads to bypass PlayFab relay hops.

Load 16-slot preset in FragNode Workbench -> Official Wiki: Iron Gate Official Valheim Dedicated Support

FragNode 4-Zone Baseline Output (16 Slots / 35 Mods)

2456-2457/udp (Valheim Direct UDP)
Recommended Host RAM 12 GB DDR5 1.5 GB OS + 4 GB Base + 0.8 GB Mod + 3.4 GB Slots
CPU & NVMe Target 3 vCPU AMD EPYC KVM (3.5 GHz+ • 60+ GB NVMe) 40 Gbps Baseline L3/L4 Volumetric Filtering
Required Firewall Ports VH-VOXEL 2456-2457/udp (Valheim Direct UDP)

Using our 4-zone sizing equation on FragNode, an 8-to-16 Viking world running ValheimPlus, EpicLoot, and BetterNetworking fits an 8 GB or 16 GB NVMe KVM plan such as Hostinger Game Panel 2 ($6.99/mo) or Game Panel 4 ($11.99/mo retrieved 2026-11-12) with 1-click BepInEx support in CubeCoders AMP, while Vultr High Frequency 8 GB ($48.00/mo) provides direct Singapore and Tokyo nodes.

Inspect Hostinger Game Panel Specs via FragNode -> Compare Vultr High Frequency via FragNode ->

FragNode Concurrency-to-RAM Sizing Matrix (2026-11-12 Public Rates)

Player Concurrency Host RAM Tier Heap Flag / CPU Target Published Vendor Tier Vendor Page
4–10 Vikings (Vanilla / Ashlands) 8 GB Host 2 vCPU EPYC NVMe + AMP Hostinger Game Panel 2 (8 GB • $6.99/mo) Check Hostinger Game Panel via FragNode
10–20 Vikings (BepInEx + EpicLoot) 16 GB Host 4 vCPU EPYC NVMe + AMP Hostinger Game Panel 4 (16 GB • $11.99/mo) Check Hostinger Game Panel via FragNode
APAC Direct UDP High-Clock Node 8 GB HF 3.5GHz+ Singapore / Tokyo Vultr HF 8 GB ($48.00/mo) Check Vultr High Frequency via FragNode
Guild Map Portal & Modpack Mirror Managed Web LiteSpeed NVMe Web ChemiCloud Web ($2.95/mo) Check ChemiCloud Clan Web via FragNode

FragNode pricing citation: Public rates retrieved 2026-11-12 from official vendor pricing pages; verify live renewal terms at checkout.

FragNode Valheim Direct UDP Startup & Rolling Backup Flags

./valheim_server.x86_64 -name "FragNode-Ashlands" -port 2456 \
  -world "Midgard" -password "change-me" -public 1 -saveinterval 1200 -backups 6
sudo ufw allow 2456:2457/udp

FragNode Production Configuration & Firewall Checklist

  1. FragNode Engineering Check #1

    Vanilla Valheim throttles per-peer send rates to 64 KB/s; installing BetterNetworking via BepInEx raises network buffers to 256 KB/s to prevent boat and boss desync in dense bases.

  2. FragNode Engineering Check #2

    When every player connects from Steam PC, launch without the -crossplay flag so clients communicate directly over UDP 2456 rather than routing through PlayFab relay servers.

  3. FragNode Engineering Check #3

    Keep -backups 6 -saveinterval 1200 enabled so six rolling .db and .fwl world archives remain available on NVMe storage.

FragNode Valheim Dedicated Co-op & BepInEx Sizing Blueprint — FragNode 4-zone sizing illustration

Customize Exact Mod Counts in the FragNode Workbench

We pre-linked this blueprint to our interactive FragNode 4-zone workbench so you can drag player concurrency up to 200 slots or adjust active mods between 0 and 300 in real time.

FragNode Engineering FAQ: FragNode Valheim Dedicated Co-op & BepInEx Sizing Blueprint

Why does Valheim rubberband in large castles even when VPS CPU load is under 35% on FragNode?

The bottleneck is Valheim default 64 KB/s send-queue cap rather than CPU saturation; raising the buffer via BepInEx BetterNetworking resolves instance sync lag.

How much RAM does FragNode recommend for an Ashlands world with 40 BepInEx mods?

FragNode calculates roughly 7.2 GB to 9.5 GB active memory including Linux pagecache, snapping to a 12 GB or 16 GB KVM plan for long-term world growth.

Which firewall ports must stay open in the FragNode Valheim checklist?

Allow UDP 2456 and UDP 2457 inbound on your Linux firewall.

Related FragNode Game Server Blueprints