
Asustor Flashstor 6 FS6706T
Score: 83/100
Terramaster F4-425 Plus 16GB
Score: 84/100Rankings

The TerraMaster F4-425 Plus is a 4-bay hybrid NAS delivering dual 5 GbE connectivity, 16 GB DDR5 memory, and 8K transcoding capabilities. Limitations include PCIe x1 M.2 bandwidth and non-ECC RAM, which may affect high-end workloads. Designed for media-rich home or small-office environments seeking high capacity and fast cache.

The ASUSTOR Flashstor FS6706T is a compact 6-bay all-SSD NAS delivering blazing 2.5 GbE performance and 4K transcoding. Its limitations include a modest 4 GB RAM base and the inability to use HDDs, which may restrict capacity flexibility. Best suited for content creators and small-to-medium businesses that prioritize speed over massive raw capacity.
| Attribute | ![]() | ![]() |
|---|---|---|
6best | 4 | |
4best | 4best | |
2 GHz | 3.6 GHzbest | |
4 GB | 16 GBbest | |
590 MB/s | 1,020 MB/sbest | |
583 MB/s | 1,020 MB/sbest | |
4best | 4best | |
2best | 2best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Drive Bays | 6 | 4 |
Performance(5) | ||
CPU Model | Intel Celeron N5105 | Intel N150 |
CPU Clock Speed (GHz) | 2.0 GHz | 3.6 GHz |
Memory (RAM) (GB) | 4 GB | 16 GB |
Sequential Read Speed (MB/s) | 590 MB/s | 1020 MB/s |
Sequential Write Speed (MB/s) | 583 MB/s | 1020 MB/s |
Connectivity(1) | ||
Ethernet Speed (Gbps) | 2.5 Gbps | 5 Gbps |
Power(1) | ||
Power Consumption (Active) (W) | 18.2 W | 90 W |
Build & Design(2) | ||
Weight (kg) | 1.35 kg | 2.9 kg |
Dimensions (H×W×D) (cm) | 30.7×4.8×19.3 cm cm | 15.0×18.1×21.9 cm cm |

Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the FS6706T for its blistering all-flash performance that pushes the limits of 2.5 GbE, its silent operation, and robust 4K transcoding for Plex streaming, while noting the base 4 GB RAM and lack of HDD support as trade-offs.
Home users and small-business owners praise the fast SSD speeds, quiet operation and low energy use, but note occasional concerns about limited memory and the inability to add traditional hard drives.

“can double as a home lab server with juice to spare”

“TerraMaster's Best NAS Yet”



Professional reviewers consider the F4-425 Plus a well-rounded, mid-range NAS that delivers a notable performance uplift thanks to its Intel N150 processor, 16 GB DDR5 memory, and dual 5 GbE ports. The hybrid storage architecture and three M.2 slots are highlighted as differentiators, while the non-ECC memory and limited M.2 bandwidth are cited as the main compromises.
Everyday users generally praise the device for its massive capacity, fast NVMe caching, and future-proof 5 GbE networking, especially for home media and small-office workflows. Recurring complaints focus on the limited SSD lane bandwidth, underused HDMI port, and the bulk of the external power brick.