Asustor AS6704T
Score: 79/100
Synology DS425+
Score: 65/100Rankings
The Asustor Lockerstor 4 Gen2 (AS6704T) is a high-performance 4-bay NAS aimed at power users and small businesses, offering up to 88 TB raw capacity, extensive RAID options, dual 2.5 GbE networking and four M.2 NVMe slots. It delivers fast file transfers and 4K media handling, though it lacks native 10 GbE and requires tools for drive installation.
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 | | |
|---|---|---|
88 TBbest | 80 TB | |
4best | 4best | |
2.5 Gbpsbest | 2.5 Gbpsbest | |
4best | 4best | |
4 GBbest | 2 GB | |
| ↓ lower better | 35 W | 28.25 Wbest |
| ↓ lower better | 17.6 dBbest | 21.6 dB |
3 yearsbest | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(4) | ||
CPU Model | Intel Celeron N5105 | Intel Celeron J4125 |
System Memory (GB) | 4 GB | 2 GB |
Power Consumption (Active) (W) | 35 W | 28.25 W |
Noise Level (dB) | 17.6 dB | 21.6 dB |
Build & Design(2) | ||
Weight (kg) | 3.5 kg | 2.18 kg |
Power Supply Type | 90 W AC adapter | External 90W AC adapter |
Storage & Capacity(3) | ||
Maximum Raw Capacity (TB) | 88 TB | 80 TB |
RAID Support | Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 | SHR, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
Supported Drive Types | 3.5"/2.5" SATA HDD/SSD | 3.5"/2.5" SATA |
Products in the top-left offer the best value (high score, low price).
Professional reviewers rate the AS6704T extremely highly, with PCMag giving it a perfect 5.0/5.0 "Exemplary" score for its blazing speeds, robust hardware and extensive app library.
Everyday users love the AS6704T's raw performance, flexible M.2 and 2.5 GbE options, and the breadth of apps that let them run Plex, Docker and VMs with ease.
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.
“high-performance design for intensive tasks like video editing”
“up to 590 MB/s read and 555 MB/s write speeds”
“smooth 4K streaming and transcoding”
Asustor is suitable for users needing more hardware headroom, while DS425+ is better for those who value DSM's ecosystem and low noise.
