The catch
TerraMaster F4-425 Plus N150 16GB
A 10GbE client cannot link at 10GbE to this chassis, since 5GbE is the fastest port included.
Side by side
As supplied, the F4-425 Plus brings three M.2 slots and 16GB memory. A workstation that already has a 10GbE connection is the better match for the DXP4800 Plus.
Before you buy
Before formatting, this example gives 36TB with F4-425 Plus N150 16GB and 36TB with UGREEN NASync DXP4800 Plus. A different chassis does not increase protected capacity.
Where this comes from
Suppose each SATA bay holds a supported 12TB disk. A two-bay RAID 1 gives the usable capacity of one disk. With three or more drives, RAID 5 usable TB = (drive count minus 1) × 12. The layout is only an illustration. It is not storage that comes included, and it is not a backup.
The catch
A 10GbE client cannot link at 10GbE to this chassis, since 5GbE is the fastest port included.
The catch
UGOS Pro's app catalog is newer than Synology DSM's.


We may earn a commission from qualifying Amazon purchases. How we make money
Which of F4-425 Plus N150 16GB and DXP4800 Plus fits depends on protected storage, included networking and the exact SSD or application layout you need.
Different choices follow from a 5GbE hybrid pool than from a 10GbE editing link.
Which one fits
RAID 1 is used for two disks and RAID 5 for three or more in this example. F4-425 Plus N150 16GB gives 36TB and UGREEN NASync DXP4800 Plus gives 36TB before formatting. Changing chassis does not raise this protected capacity.
The included ports run at 5GbE and 10GbE. Pair the 100GB calculation with the actual client speed.
TerraMaster F4-425 Plus N150 16GB has 16 GB RAM and supports 32 GB, and UGREEN NASync DXP4800 Plus has 8 GB and supports 64 GB. Match the stated application memory requirement to the supplied configuration first, then decide on any upgrade budget. RAM capacity alone cannot establish application speed.
The F4-425 Plus ships with 8GB more RAM, while DXP4800 Plus supports 32GB more at its documented maximum. For a deployment that starts right away, go by the supplied budget. For a workload with a specific growth forecast, go by the ceiling.
In practice
Before formatting, this example gives 36TB with F4-425 Plus N150 16GB and 36TB with UGREEN NASync DXP4800 Plus. A different chassis does not increase protected capacity.
Suppose each SATA bay holds a supported 12TB disk. A two-bay RAID 1 gives the usable capacity of one disk. With three or more drives, RAID 5 usable TB = (drive count minus 1) × 12. The layout is only an illustration. It is not storage that comes included, and it is not a backup.
At line rate, the minimum is 160 seconds for F4-425 Plus N150 16GB and 80 seconds for UGREEN NASync DXP4800 Plus. Real copies take longer. Over a 1GbE client, the lower bound rises to 800 seconds for both.
Decimal 100GB × 8 = 800 gigabits. Take the fastest included port rate, 5Gbps or 10Gbps, and divide 800 by it. This lower-bound calculation ignores protocol overhead, optional adapters and aggregated ports.
The F4-425 Plus ships with 8GB more RAM, while DXP4800 Plus supports 32GB more at its documented maximum. For a deployment that starts right away, go by the supplied budget. For a workload with a specific growth forecast, go by the ceiling.
In supplied RAM, 16 minus 8 = 8GB favors TerraMaster. In supported ceiling, 64 minus 32 = 32GB favors UGREEN. Both figures describe capacity limits and not processing-speed measurements.

TerraMaster, F4-425 Plus N150 16GB
A bulk array and SSD-backed applications both fit here, thanks to four SATA bays, three M.2 slots and 16GB supplied memory. Dual 5GbE ports are a good match for an upgraded home or small-office network.

UGREEN, DXP4800 Plus
A 4-bay chassis whose fastest documented network path is 10 Gbps.
Spec by spec
| Spec | TerraMaster F4-425 Plus N150 16GB | UGREEN NASync DXP4800 Plus | In practice |
|---|---|---|---|
| Fastest included Ethernet port | 5GbE | 10GbE | This port rate only helps a transfer if the client, switch and storage keep up. |
| Supplied RAM | 16GB | 8GB | This figure is the memory already installed, before any upgrade modules are bought. |
| Supported RAM ceiling | 32GB | 64GB | The manufacturer-supported upgrade ceiling for concurrent services is set by this. |
| M.2 storage slots | 3 | 2 | Treat SSD cache and storage pools as a separate plan from the SATA archive. |
| Processor | Intel N150 | Intel Pentium Gold 8505 | The platform determines the media engines, the application architecture and the concurrency. |
| Software and expansion route | TOS | UGOS Pro | Pick the applications and supported add-ons the job calls for. |
Trade-offs
Change of plan
Go with TerraMaster F4-425 Plus N150 16GB. F4-425 Plus comes with 16 GB RAM and three M.2 slots. DXP4800 Plus comes with 8 GB and two M.2 slots, even though its later memory ceiling is higher.
Go with UGREEN NASync DXP4800 Plus. Where F4-425 Plus has 5 GbE, DXP4800 Plus includes a 10 GbE port. Using the faster link still takes a compatible workstation, switch and storage workload.
Decision guide
As supplied, the F4-425 Plus brings three M.2 slots and 16GB memory. A workstation that already has a 10GbE connection is the better match for the DXP4800 Plus.
Four equal SATA disks give the same protected capacity either way. A fast network can outrun a slow disk workload on both models, so settle the SSD pool or array first and only then budget for Ethernet adapters.
Officially, the DXP4800 Plus supports 64GB memory while the F4-425 Plus supports 32GB. The latter starts with more RAM, so weigh the supplied configuration and the planned upgraded configuration on their own.
By the numbers
What we found across the NAS devices we compare, plus the checked facts behind each finding.
Only 8 of the 32 models checked meet every need here: “Four drives to start” and “Keep going after one drive fails”.
8 models fit, out of 32 checkedHow we countedThe count uses each product's current fit ratings for “Four drives to start” and “Keep going after one drive fails”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| TerraMaster F4-425 Plus N150 16GB |
|
|
|
| UGREEN NASync DXP4800 Plus |
|
|
|
Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

Three M.2 slots and 16GB RAM should come as supplied
See price & reviews on Amazon
10GbE is already in use at your workstation
See price & reviews on AmazonEach link opens in a new tab.
We may earn a commission from qualifying Amazon purchases. How we make money