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QNAP TS-1655-8G-US 16-Bay Atom 2.5GbE High-Capacity NAS — main product image
QNAP

QNAP TS-1655-8G-US 16-Bay Atom 2.5GbE High-Capacity NAS

★★★★★4.0 (8 reviews)
3.5 InchPCIe Gen 3

A 16-bay hybrid NAS with Intel Atom 8-core power, dual 2.5GbE, and room to grow up to 128GB ECC RAM.

$2,057.43*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The QNAP TS-1655-8G-US is a hybrid NAS built around an Intel Atom C-5125 eight-core processor that can burst up to 2.8GHz, giving it the processing muscle to handle simultaneous file serving, surveillance, virtualization, and multimedia tasks. Its 16-bay layout — twelve 3.5-inch bays for bulk HDD storage and four 2.5-inch bays for SSDs — lets you build a tiered storage strategy inside a single enclosure, keeping frequently accessed data on fast drives while archiving everything else on high-capacity disks.

Connectivity starts with dual 2.5GbE RJ45 ports that support link aggregation for improved throughput on large backup and restoration jobs. For environments that need more speed, three open PCIe slots accept 10GbE adapters or other expansion cards. The dual M.2 NVMe PCIe Gen 3 slots add another performance layer, serving as SSD cache, a dedicated SSD pool, or a slot for a Google Coral AI accelerator. With 8GB of DDR4 RAM upgradable to 128GB with ECC support, the TS-1655 can scale from a departmental file server to a capable virtualization host as your needs evolve.

Key Features

Intel Atom C-5125 8C processor, burst up to 2.8GHz

8GB UDIMM DDR4 RAM and upgradable to 128GB with ECC support

12 x 3.5 Inch + 4 x 2.5-inch SATA 6Gb/s, 3Gb/s drives

Dual 2.5GbE RJ45 for accelerating intensive file access, large backup/restoration tasks, virtualization, and multimedia transfer

Dual M.2 NVMe PCIe Gen 3 slots allow implementing SSD cache acceleration, SSD storage pool, or a Coral M.2 accelerator for faster image recognition

Specifications

Processor
Intel Atom C-5125, 8-core, burst up to 2.8GHz
Memory
8GB UDIMM DDR4 (upgradable to 128GB, ECC supported)
Drive Bays
12 x 3.5-inch + 4 x 2.5-inch SATA 6Gb/s, 3Gb/s
Network Ports
Dual 2.5GbE RJ45
M.2 Slots
2 x M.2 NVMe PCIe Gen 3
PCIe Slots
3
Brand
QNAP
Model
TS-1655-8G-US

Pros & Cons

👍 Pros

  • 16-bay hybrid design combines high-capacity 3.5-inch and fast 2.5-inch storage in a single chassis
  • RAM is upgradable from 8GB all the way to 128GB with ECC support for mission-critical reliability
  • Three PCIe expansion slots provide flexibility to add 10GbE networking or additional functionality
  • Dual M.2 NVMe slots enable SSD caching or AI acceleration without occupying drive bays
  • Intel Atom 8-core processor with burst up to 2.8GHz handles virtualization and multi-user access

👎 Cons

  • Ships with only 8GB RAM, which may require an immediate upgrade for heavier workloads
  • Dual 2.5GbE networking is adequate but not ideal for environments that need 10GbE out of the box
  • The large 16-bay form factor requires significant rack or shelf space
  • No built-in redundant power supply, which matters for always-on enterprise deployments

Frequently Asked Questions

It has 16 bays total — 12 standard 3.5-inch bays for high-capacity HDDs and 4 dedicated 2.5-inch bays for SSDs, all supporting SATA 6Gb/s and 3Gb/s connections.
Yes, the TS-1655 supports up to 128GB of UDIMM DDR4 RAM with ECC support, so you can scale memory to match demanding workloads like virtualization or large-scale file serving.
The two M.2 PCIe Gen 3 slots can be used for SSD caching to speed up frequently accessed data, as an SSD storage pool, or to install a Google Coral M.2 accelerator for AI-powered image recognition within QNAP's apps.
Yes, the TS-1655 includes three PCIe expansion slots, allowing you to add 10GbE network cards, additional storage controllers, or other compatible expansion cards.
It ships with dual 2.5GbE RJ45 ports, which can be link-aggregated for increased throughput or failover, and you can add faster networking via the PCIe slots.

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