QNAP

QNAP TS-673A-8G 6-Bay NAS 2.5GbE Ports PCIe Slots

4.2 (211 reviews)
8GB DDR4USB 3.2

The QNAP TS-673A-8G packs six bays, dual 2.5GbE, PCIe expandability, and NVMe SSD caching into a powerful AMD-powered NAS.

$999.00*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 20, 2026.Price and availability are subject to change.

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Overview

The QNAP TS-673A-8G is a six-bay NAS designed for users who demand both high performance and long-term expandability. Powered by an AMD Ryzen V1000 series processor and equipped with 8GB of DDR4 RAM (upgradeable to 64GB), the unit handles demanding workloads including virtualization, surveillance, media streaming, and large-scale file sharing. Its dual 2.5 Gigabit Ethernet ports provide fast network throughput out of the box, with backward compatibility to 1GbE and 100MbE networks, and port trunking enables combined speeds of up to 5 Gbps for bandwidth-intensive tasks.

Expandability is a defining characteristic of the TS-673A. PCIe slots allow you to add 10GbE networking, extra USB 3.2 Gen 2 ports, wireless adapters, or even an entry-level NVIDIA GPU for video transcoding and virtual machine GPU passthrough. Two built-in M.2 PCIe NVMe SSD slots support Qtier Technology and SSD caching, automatically optimizing data placement between fast and high-capacity tiers. With three USB 3.2 Gen 2 Type-A ports for external devices and six 3.5-inch drive bays for SATA storage, the TS-673A-8G offers a scalable foundation that can evolve alongside your storage and computing needs for years to come.

Key Features

Both 2.5GbE ports are backwards compatible with 1GbE/ 100MbE speeds. Up to 5 Gbps transfer speeds can be achieved by using port trunking.

Add extra functionality with PCIe cards, including 10GbE ports, SSD caching, extra USB 3.2 Gen 2 ports, wireless networking, or Fibre Channel.

Supports entry-level NVIDIA graphics cards for video processing or GPU-passthrough to VMs.

Features two M.2 PCIe NVMe SSD slots for Qtier Technology and SSD Caching enable constant storage optimization.

2 x 2.5 Gigabit Ethernet Port (2.5G/1G/100M); 3 x Type-A USB 3.2 Gen 2 10Gbps

Specifications

Brand
QNAP
Model
TS-673A-8G
Drive Bays
6
RAM
8GB DDR4 (expandable to 64GB)
Network Ports
2 x 2.5GbE (backward compatible with 1GbE/100MbE)
USB Ports
3 x USB 3.2 Gen 2 Type-A (10Gbps)
M.2 Slots
2 x PCIe NVMe SSD
PCIe Expansion
Yes (10GbE, GPU, USB, wireless, Fibre Channel)
GPU Support
Entry-level NVIDIA (video processing, VM passthrough)
Max Port Trunking Speed
5 Gbps

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Pros & Cons

👍 Pros

  • Six drive bays provide substantial raw storage capacity with RAID flexibility.
  • Dual 2.5GbE ports with port trunking deliver up to 5 Gbps throughput without add-in cards.
  • PCIe expansion slots allow upgrades to 10GbE, GPU acceleration, and more.
  • Two M.2 NVMe SSD slots enable Qtier and SSD caching for optimized storage performance.
  • RAM is expandable from 8GB up to 64GB DDR4 for demanding applications and virtualization.

👎 Cons

  • Drives are not included, adding significant cost to reach a fully operational setup.
  • The unit consumes more power and desk space than two-bay or four-bay NAS alternatives.
  • 2.5GbE networking may feel limiting for users who need 10GbE out of the box without purchasing an add-in card.
  • Higher price point puts it beyond casual home users who only need basic file sharing.

Frequently Asked Questions

It ships with 8GB of DDR4 RAM and supports upgrades up to 64GB, allowing you to scale memory as your workloads grow.
Yes, the PCIe slot supports entry-level NVIDIA graphics cards for hardware-accelerated video processing or GPU passthrough to virtual machines.
It includes dual 2.5GbE ports that are backward compatible with 1GbE and 100MbE. Using port trunking, you can achieve combined throughput of up to 5 Gbps.
Yes, it features two M.2 PCIe NVMe SSD slots that can be used for SSD caching or Qtier automated storage tiering to boost performance.
The PCIe slots support 10GbE network cards, additional USB 3.2 Gen 2 ports, wireless networking adapters, Fibre Channel cards, and SSD caching cards.