
QNAP TS-433 4-bay
Score: 82/100
Synology DS223 2-bay
Score: 76/100Rankings

The QNAP TS-433-4G-US is a compact 4-bay NAS powered by an ARM Cortex-A55 CPU, offering AI-driven photo management, dual Ethernet (including 2.5 GbE), hardware encryption and low power consumption for home and small-office use.

The DS223 offers 36 TB of raw capacity, 2 GB RAM and a familiar DSM experience in a compact 2-bay chassis. It's a solid, budget-friendly choice for backups and file sharing, though network speed and lack of SSD cache keep it from high-performance scenarios.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 36 TBbest | |
4best | 2 | |
2.5 Gbpsbest | 1 Gbps | |
4best | 4best | |
4 GBbest | 2 GB | |
| ↓ lower better | 22.54 W | 16.31 Wbest |
| ↓ lower better | — | 18.2 dBbest |
2 yearsbest | 2 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Security(1) | ||
OS Compatibility | QTS 5.0.1+ | DSM 7.x |
Performance(4) | ||
CPU Model | ARM Cortex-A55 quad-core 2.0 GHz | Realtek RTD1619B |
System Memory (GB) | 4 GB | 2 GB |
Ethernet Speed (Gbps) | 2.5 Gbps | 1 Gbps |
Power Consumption (Active) (W) | 22.54 W | 16.31 W |
Build & Design(2) | ||
Weight (kg) | 2.07 kg | 0.88 kg |
Power Supply Type | External AC adapter | 60W AC adapter |
Storage & Capacity(3) | ||
Drive Bays | 4 | 2 |
RAID Support | RAID 0, 1, 5, 6, JBOD | RAID 0,RAID 1,Basic,SHR |
Supported Drive Types | 3.5" SATA HDDs, 2.5" SATA SSDs and HDDs | 3.5" SATA HDD,2.5" SATA SSD/HDD |


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

Professional reviewers describe the TS-433 as a smartly designed home NAS that balances performance, AI features, and affordability. They commend its AI-driven photo management and 2.5 GbE connectivity, but caution that the ARM CPU and fixed 4 GB RAM limit software compatibility and future expandability.
Everyday users appreciate the device's easy setup, quiet operation, and especially the fast, accurate AI photo organization. The 2.5 GbE port is frequently praised for speeding up backups and streaming, while common frustrations revolve around limited RAM, occasional performance slowdowns under load, and the lack of SSD cache or broader app support.

Professional reviewers praise the DS223 as an excellent entry-level NAS that delivers the core Synology experience at a competitive price, but note the single 1 GbE port, lack of SSD caching, and insufficient hardware for transcoding or virtualization.
Everyday users consistently commend the straightforward setup, dependable operation, and quiet fan, while complaints focus on limited network speed, absence of SSD caching, and the cap on maximum drive capacity.
“smartly designed home NAS”

“excellent AI photo tagging”

“forward-thinking”

