NAS · Head to head

Synology DS423 vs Ubiquiti UNAS 4

Full NAS comparison in 2026

Updated October 2026
Data from Amazon and official Synology and Ubiquiti sites.
2026 verdict
Synology DS423 is the more complete option versus Ubiquiti UNAS 4 in 2026, helped most by price, rating, and apps & virtualization.
Synology DS423
Winner
Synology DS423
$399.99

Last recorded price

Buy on Amazon USA
It separates itself most clearly on price, rating, and apps & virtualization, while still looking better on its broader overall balance. Ubiquiti UNAS 4 is the better fit only for buyers who prioritize memory capacity above everything else here. Overall, Synology DS423 makes more sense for most people.
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FeatureSynology DS423Ubiquiti UNAS 4Winner
Price$399.99$574.99Synology DS423
Rating4.54.1Synology DS423
Memory Capacity2 GB4 GBUbiquiti UNAS 4
Apps & VirtualizationPlex Media Server, Surveillance App, AI Photo RecognitionNoneSynology DS423
ProcessorHardware Encryption EngineNoneTie
StorageHot SwappableNoneTie
NetworkWake on LANNoneTie
Winner
Synology

Synology DS423

Prime exclusive deal
$399.99

Last recorded price

Buy on Amazon USA
  • + Price: $399.99
  • + Rating: 4.5
  • + Apps & Virtualization: Plex Media Server, Surveillance App, AI Photo Recognition
  • - Memory Capacity: 2 GB vs 4 GB

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Synology DS423
  • Ubiquiti UNAS 4

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Frequently Asked Questions

Which is better overall: Synology DS423 or Ubiquiti UNAS 4?

Synology DS423 has the stronger overall profile in this comparison, especially for price, rating, and apps & virtualization.

What is the biggest difference between Synology DS423 and Ubiquiti UNAS 4?

Price is one of the clearest differences: Synology DS423 lists $399.99, while Ubiquiti UNAS 4 lists $574.99.

Which one looks better on price?

Synology DS423 is listed at $399.99, while Ubiquiti UNAS 4 is listed at $574.99. Synology DS423 (better spec).

Who should buy Synology DS423?

Choose Synology DS423 if your priority is price and rating and that matters more than memory capacity.

Who should buy Ubiquiti UNAS 4?

Choose Ubiquiti UNAS 4 if your priority is memory capacity and that matters more than price.

Full comparison table

Compare all 35 NAS side by side

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  • 35 NAS
  • 61 specs compared
  • 58 filters
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