
Terramaster F6-424
Score: 78/100
Synology DS425+
Score: 65/100Rankings

The TerraMaster F6-424 is a 6-bay NAS powered by an Intel N95 quad-core CPU, 8 GB DDR5 RAM (expandable to 32 GB) and dual 2.5 GbE ports, delivering high-performance storage, 4K hardware transcoding and extensive RAID options for SMBs and power users.

The DS425+ is a 4-bay NAS with 2.5 GbE networking and dual M.2 slots, offering quiet operation and DSM 7.2+ features, aimed at home offices and small businesses.
| Attribute | ![]() | ![]() |
|---|---|---|
144 TBbest | 80 TB | |
6best | 4 | |
2.5 Gbpsbest | 2.5 Gbpsbest | |
4best | 4best | |
8 GBbest | 2 GB | |
| ↓ lower better | 43 W | 28.25 Wbest |
| ↓ lower better | 22 dB | 21.6 dBbest |
2 years | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Security(1) | ||
OS Compatibility | TOS | DSM 7.2+ |
Performance(4) | ||
CPU Model | Intel N95 | Intel Celeron J4125 |
System Memory (GB) | 8 GB | 2 GB |
Power Consumption (Active) (W) | 43 W | 28.25 W |
Noise Level (dB) | 22 dB | 21.6 dB |
Build & Design(3) | ||
Weight (kg) | 2.7 kg | 2.18 kg |
Power Supply Type | Internal | External 90W AC adapter |
Warranty Period (years) | 2 years | 3 years |
Storage & Capacity(4) | ||
Maximum Raw Capacity (TB) | 144 TB | 80 TB |
Drive Bays | 6 | 4 |
RAID Support | Single, JBOD, RAID 0, 1, 5, 6, 10, TRAID, TRAID+ | SHR, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
Supported Drive Types | 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD | 3.5"/2.5" SATA |


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

Professional reviewers praise the F6-424 for its powerful Intel N95 processor, dual 2.5 GbE networking and flexible RAID options, noting that it delivers enterprise-level performance at a mid-range price. However, they caution that the base 8 GB of RAM and the less-polished TOS UI may require upgrades or adjustments for power users.
Everyday users appreciate the easy, tool-free drive installation and the smooth 4K media playback via Plex, but many report that the device can lag under heavy multi-user scenarios and wish for more RAM out of the box. The size of the chassis also draws mixed feedback.

Professional reviewers consider the DS425+ an evolutionary update that modernizes networking with 2.5 GbE and adds dual M.2 slots, but they caution that the aging J4125 processor and limited memory cap its performance for demanding virtualization or transcoding tasks.
Everyday users appreciate the silent, "library-quiet" operation and the speed boost from 2.5 GbE, finding the setup straightforward and the DSM interface user-friendly, while noting the lack of 10 GbE and occasional instability with the USB-C expansion.
“"library-quiet"”

“"2.5GbE support is a game-changer for local backups and media streaming"”

“"Silent operation, ideal for home offices"”


Choose TerraMaster if 10 GbE and higher CPU performance are critical; choose DS425+ for quieter operation and DSM reliability.