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Key Points

Key Takeaways

  • 1

    Why Network Investment Now?

  • 2

    LLM Era: Frequency of downloading/transferring 70GB model files has exploded. 1Gbps takes forever.

  • 3

    Wi-Fi 7: Realizes 'low latency & wide bandwidth' essential for wireless streaming to Vision Pro.

  • 4

    10GbE: Because speeds exceed HDD limits (200MB/s), NAS feels like 'local SSD'.

  • 5

    Configuration Plan: UniFi (For Pro) vs TP-Link (For Cost-Performance) High-Low Comparison.

Introduction: The End of Gigabit

Until 2024, 1Gbps (1000BASE-T) was sufficient for home LANs. However, for engineers in 2026, 1Gbps is a “bottleneck”.

  • Gen AI: Sending Llama-4-70B weight files (40GB) from NAS to GPU server takes over 5 minutes with 1Gbps. With 10GbE, it takes 30 seconds.
  • Spatial Computing: When mirroring a Mac screen on Vision Pro, Wi-Fi 6 lacks bandwidth causing block noise.

The time has come to turn your home into a “Data Center”.

1. Core: Router and Switch

The router is the core of the network. There are two choices.

Pro Route: Ubiquiti UniFi

Ubiquiti U7 Pro (Wi-Fi 7 AP)

Ceiling-mounted professional AP. Supports 6GHz band, capable of wireless communication exceeding 5Gbps in actual measurement. The beauty of the management screen (UniFi Network) satisfies engineer's ownership desire.

TP-Link Archer BE805

Wi-Fi 7 router that keeps price down while equipped with two 10GbE ports (WAN/LAN). Ideal for those who want to experience 10G for the time being with easy setup and overwhelming cost performance.

2. Storage: Building 10G NAS

NAS is not a “backup storage”. It is a “workspace”. NAS connected via 10GbE exceeds 1000MB/s in read/write speed, equal to or faster than PC built-in SATA SSDs. In other words, you can execute video editing and LLM inference while data remains on the NAS.

QNAP TS-464 (8G)

Expansion monster equipped with 2.5GbE as standard and capable of adding a 10GbE card via PCIe slot. Intel Celeron powered, so Docker runs smoothly, making it excellent as a home server.

Mandatory Option: Opening the Optical Path

10Gtek 10G SFP+ Network Card

10G LAN card to plug into PC side. RJ45 (LAN cable) type generates immense heat, so SFP+ (optical fiber) type is the expert's correct choice. Less heat and stable.

3. Architecture: Network Diagram

Ideal 2026 home network configuration.

graph TD
 ISP[ISP (10G Fiber)] --> Router[Ubiquiti UDM SE]
 Router -->|10G DAC| Switch[USW-Aggregation]

 subgraph 10G World
 Switch -->|SFP+| NAS[QNAP NAS]
 Switch -->|SFP+| PC[Main Workstation]
 Switch -->|SFP+| Server[GPU Server]
 end

 subgraph 2.5G/1G World
 Router -->|PoE+| AP[U7 Pro Wi-Fi 7]
 AP -.-> VR[Vision Pro]
 AP -.-> IOT[Smart Home Devices]
 end

4. Engineer’s Perspective: The Battle Against Latency

Not just Bandwidth, but Latency is also important. Wi-Fi 7’s headline feature MLO (Multi-Link Operation) uses multiple bands of 2.4GHz/5GHz/6GHz simultaneously and instantly flows packets to empty lanes.

This physically eliminates “lag” in VR games and cloud gaming. Even wired supremacists gamers will be convinced by Wi-Fi 7.

項目 Wi-Fi 6E Wi-Fi 7
Max Speed (Theoretical) 9.6 Gbps 46 Gbps
Channel Width 160 MHz 320 MHz
Modulation 1024-QAM 4096-QAM
VR Latency Occasional Stutter Wired-like

Conclusion: Investment in Infrastructure Never Betrays

CPUs and GPUs become obsolete in 2 years, but network infrastructure (especially wiring and switches) lasts for 10 years. Build a comfortable “Home Data Center” and acquire a creative environment without bottlenecks.