The QNAP TVS-h674 is a 6-bay NAS designed for prosumer use. It comes with 16GB DDR4 of RAM and can be upgraded to 128GB DDR4. Powered by the Intel Core i3-12100 processor, it offers reliable network-attached storage for file sharing, backups, and media streaming.
This guide covers complete RAM and storage compatibility for the QNAP TVS-h674, including upgrade options, maximum supported configurations, and recommended drives.
Specifications Overview
| Specification | Details |
|---|---|
| NAS Model | QNAP TVS-h674 |
| Brand | QNAP |
| Drive Bays | 6 bays |
| Processor | Intel Core i3-12100 |
| Default RAM | 16GB DDR4 |
| Maximum RAM | 128GB DDR4 |
| RAM Type | DDR4 |
| RAM Slots | 2 |
| RAM Upgradeable | Yes |
| M.2 Slots | 2 (2280 NVMe Gen 4) |
| Ethernet | 2x 2.5GbE |
| USB Ports | 2x USB 3.2 Gen 2 + 1x USB 3.2 Gen 2 Type-C |
| Use Case | Prosumer |
| Price Tier | High-End |
Memory (RAM) Compatibility
The QNAP TVS-h674 ships with 16GB DDR4 and supports a maximum of 128GB DDR4 across 2 slots. Upgrading your NAS RAM can significantly improve performance for virtual machines, Docker containers, and simultaneous user access.
Recommended RAM Upgrades
| Module | Capacity | Price |
|---|---|---|
| Crucial SODIMM DDR4 | 4GB | Check Price |
| Crucial SODIMM DDR4 | 8GB | Check Price |
| Kingston ValueRAM DDR4 | 8GB | Check Price |
Storage Compatibility
The QNAP TVS-h674 has 6 drive bays supporting 3.5″ SATA HDDs and 2.5″ SATA SSDs.
It also includes 2 M.2 slots (2280 NVMe Gen 4) for NVMe SSD caching, which can dramatically improve random read/write performance.
Recommended NAS Hard Drives
| Drive | Capacity | Price |
|---|---|---|
| Seagate IronWolf | 4TB | Check Price |
| Seagate IronWolf | 8TB | Check Price |
| WD Red Plus | 4TB | Check Price |
| WD Red Plus | 8TB | Check Price |
Recommended NVMe Cache Drives
| Drive | Capacity | Price |
|---|---|---|
| WD Red SN700 | 500GB NVMe | Check Price |
| Seagate IronWolf 525 | 500GB NVMe | Check Price |
Network Connectivity
The QNAP TVS-h674 features 2x 2.5GbE Ethernet and 2x USB 3.2 Gen 2 + 1x USB 3.2 Gen 2 Type-C connectivity.
With high-speed Ethernet, this NAS can fully utilise fast NVMe cache drives and multiple concurrent connections.
Related Guides
Frequently Asked Questions
What is the maximum RAM for the QNAP TVS-h674?
The QNAP TVS-h674 supports a maximum of 128GB DDR4. It ships with 16GB DDR4 by default.
How many drive bays does the QNAP TVS-h674 have?
The QNAP TVS-h674 has 6 drive bays supporting 3.5″ SATA HDDs and 2.5″ SATA SSDs. It also has 2 M.2 slots for NVMe SSD caching.
Can I upgrade the RAM in the QNAP TVS-h674?
Yes, the RAM is user-upgradeable.
What hard drives work with the QNAP TVS-h674?
The QNAP TVS-h674 works with standard 3.5″ SATA HDDs. We recommend NAS-rated drives like the Seagate IronWolf or WD Red Plus.
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Prices from PCHub.UK via ComputersDeal. As an affiliate, we may earn from qualifying purchases. Prices updated 2026-04-10 08:16:07.