TerraMaster F4-425 Pro 4-Bay NAS Review — Is It Worth It? [2026]
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TerraMaster F4-425 Pro Performance 4-Bay NAS
The top of the F4-425 range: an Intel N305 or N350 CPU, up to 16GB of DDR5, dual 5GbE and three NVMe slots, aimed at Docker, transcoding and creative workflows.
Is the TerraMaster F4-425 Pro worth buying?
If you plan to run Docker containers, do 4K transcoding for multiple users or keep VMs on NVMe, the Pro gives you the headroom the cheaper models do not. The entry N305 option is $594.99, and the faster N350 option runs from $679.99 to $799.99 depending on color. For plain storage and backups it is overkill, and with only three reviews all we can say is that the early feedback is positive.
A four-bay NAS built for heavier workloads
The Pro comes in Gunmetal Grey or Silver, with an Intel N305 (8GB) or N350 (16GB) processor. The product page lists the N350 as a 7 W part and pairs it with 16GB of DDR5, expandable to 32GB. Connectivity is two 5GbE ports and four USB 3.2 Gen 2 ports at 10 Gbps, plus HDMI. TerraMaster pitches it with TOS 7, which it describes as an AI-native operating system.
What makes it stand out
N305 or N350, up to 16GB DDR5
The variant matters: N305 ships with 8GB and N350 with 16GB, in a single SODIMM slot with a 32GB maximum. If you want to run Docker stacks, the 16GB N350 is the version worth paying for.
4 SATA bays and 3 NVMe slots
Four 3.5/2.5-inch SATA bays take up to 30TB per drive (120TB total), and three M.2 2280 NVMe slots (PCIe 3.0) handle cache or fast pools. One early reviewer runs two HDDs in RAID, an extra HDD, one NVMe for the system and apps and a second NVMe for cache.
Dual 5GbE and 10 Gbps USB
Two 5GbE RJ-45 ports and four 10 Gbps USB 3.2 ports mean you will not run out of bandwidth or expansion. The page also lists media certification and a 2-year warranty with 24/7 support.
Full spec sheet
| Processor | Intel N305 or N350 (variant dependent) |
| Memory | N305: 8GB / N350: 16GB, single SODIMM slot, max 32GB |
| Drive bays | 4 x 3.5"/2.5" SATA (30TB max each) |
| M.2 slots | 3 x M.2 2280 NVMe (PCIe 3.0) |
| Max raw capacity | 120TB (SATA bays) |
| Network | 2 x 5GbE RJ-45 |
| USB | 3 x USB-A + 1 x USB-C, all USB 3.2 Gen 2 (10 Gbps) |
| Video out | 1 x HDMI |
| Size (H x W x D) | 150 x 181 x 219 mm |
| Weight | 2.9 kg net |
| Noise | 20.9 dB(A), 4 drives standby |
| Power supply | 90 W |
| Warranty | 2 years |
Pros & Cons
Pros
- Intel N350 with 16GB DDR5 option in a compact body
- Three NVMe slots plus four SATA bays
- Dual 5GbE and four 10 Gbps USB ports
- Drive migration keeps your data when moving disks over
- Available in two colors
Cons
- Starts at $594.99 and reaches $799.99 for the N350 in Gunmetal Grey
- Only 3 reviews on the page, all short and early
- Overkill for simple file storage
- CPU and RAM depend on the variant, so read the option carefully
- Noise is rated with drives in standby
Answers before you buy
Which variant should I choose?
Can I keep my existing drives?
How does it differ from the F4-425 Plus?
What is TOS 7?
How many reviews does it have?
Great hardware, priced for people who need it
The F4-425 Pro is a strong, compact four-bay NAS, and the N350 version is the one to buy if you want real headroom. If you do not need that, save money with the Plus.
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