Synology DS1821+ vs Synology DS723+
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AI Matrix
Powered by Claude AISynology DS723+ narrowly beats the Synology DS1821+ in the nas storage category, especially in value ($399 vs $799), scoring 53 vs 47. If you want the better overall nas storage, Synology DS723+ is the recommended choice.
3 Reasons Why Synology DS723+ Is Better
- 1.Lower price: $399 vs $799
- 2.Better value score: 82 vs 52
- 3.Higher overall score: 53 vs 47
What are you giving up?
Picking Synology DS723+ over Synology DS1821+ means trading these off.
You give up
- −More RAM: 4GB vs 2GB
You gain
- +$400 cheaper ($399 vs $799)
Spec Comparison
Synology DS1821+Synology DS723+
Score Breakdown
Synology DS1821+Synology DS723+
35
Drive Bays25% weight
35Tie
52
Price20% weight
82Synology DS723+ Winner
3
RAM20% weight
0Tie
99
Power Usage15% weight
100Tie
92
Noise10% weight
94Tie
35
Warranty10% weight
35Tie
Scores are relative within the nas storagecategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
Synology DS1821+
✓ Pros
- ●More RAM: 4GB vs 2GB
✗ Cons
- ●Higher price: $799 vs $399
- ●Higher price relative to value
Synology DS723+
Winner✓ Pros
- ●Lower price: $399 vs $799
- ●Better value for money
✗ Cons
- ●Less RAM: 2GB vs 4GB
Spec Comparison
| Spec | Synology DS1821+ | Synology DS723+W |
|---|---|---|
| Price | 799$ | 399$✓ |
| RAM | 4GB✓ | 2GB |
| OS | DSM 7.2 | DSM 7.2 |
| Weight | 1100g | 1100g |
| Dimensions | 260 x 193 x 166 mm | 102 x 193 x 233 mm |
| Colors | Black | Black |
Who Should Buy
Buy Synology DS1821+ if…
The Synology DS1821+ is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy Synology DS723+ if…
Buy the Synology DS723+ if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Synology DS1821+ vs Synology DS723+ — FAQ
Synology DS1821+ vs Synology DS723+: which is better?
Synology DS723+ narrowly beats the Synology DS1821+ in the nas storage category, especially in value ($399 vs $799), scoring 53 vs 47. If you want the better overall nas storage, Synology DS723+ is the recommended choice.
Is Synology DS1821+ better than Synology DS723+?
No, Synology DS723+ scores higher (37 vs 60).
Which is cheaper, Synology DS1821+ or Synology DS723+?
Synology DS723+ is cheaper at $399 vs $799 for the Synology DS1821+.
Who should buy the Synology DS1821+?
The Synology DS1821+ is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Who should buy the Synology DS723+?
Buy the Synology DS723+ if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Which has more RAM, Synology DS1821+ or Synology DS723+?
Synology DS1821+ has more RAM (4GB vs 2GB), which helps with multitasking.
Related Comparisons
Full Synology DS1821+ review →Full Synology DS723+ review →All Synology NAS Storage →All Synology NAS Storage →
Reviewed by VersusMatrix Editorial Team
Last updated: April 25, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.