Synology DiskStation DS920+ vs Synology DS1821+

Name: Synology DiskStation DS920
Brand: Synology
SKU: synology-diskstation-ds920-sannas-storage-system
Price: 399.00 USD
Availability: InStock
Rating: 4.8 (486 reviews)

Looking for an honest Synology DiskStation DS920+ vs Synology DS1821+ comparison in 2026? We scored both nas storage on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Synology DS1821+ comes out ahead 47/100 to 55/100 — a 8-point gap. The widest gap is in performance, where the Synology DS1821+ pulls noticeably ahead. On price the Synology DiskStation DS920+ undercuts the Synology DS1821+ by 100% ($399 vs $799), which materially changes the value calculus for budget-conscious buyers.

Synology

DiskStation DS920+

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AI Matrix

Synology DS1821+ narrowly beats the Synology DiskStation DS920+ in the nas storage category, especially in performance, scoring 55 vs 47. If you want the better overall nas storage, Synology DS1821+ is the recommended choice.

Reviewed by VersusMatrix Editorial Team|Our methodology

2 Reasons Why Synology DS1821+ Is Better

1.Better performance score: 64 vs 9
2.Higher overall score: 55 vs 47

À quoi renonces-tu ?

Picking Synology DS1821+ over Synology DiskStation DS920+ means trading these off.

Tu renonces à

−$400 cheaper ($399 vs $799)

You gain

Specs are roughly matched — winner decided on overall scoring, not a specific spec advantage.

Comparaison des spécifications

Détail des scores

Synology DiskStation DS920+Synology DS1821+

Drive Bays25% weight

Synology DS1821+ Gagnant

Price20% weight

Synology DiskStation DS920+ Gagnant

RAM20% weight

Égalité

100

Power Usage15% weight

Égalité

Noise10% weight

Égalité

Warranty10% weight

Égalité

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 DiskStation DS920+

✓ Pros

●Lower price: $399 vs $799
●Better value for money

✗ Cons

●Lower performance score

Synology DS1821+

Gagnant

✓ Pros

●Higher performance score

✗ Cons

●Higher price: $799 vs $399
●Higher price relative to value

Spec	Synology DiskStation DS920+	Synology DS1821+W
Price	399$✓	799$
RAM	4GB	4GB
OS	DiskStation Manager (DSM)	DSM 7.2
Weight	1100g	1100g
Dimensions	165 x 108 x 232 mm	260 x 193 x 166 mm
Colors	Black	Black

Qui devrait acheter

Buy Synology DiskStation DS920+ if…

Choose the Synology DiskStation DS920+ if budget is your top priority — it offers competitive specs at a lower price point.

Buy Synology DS1821+ if…

Buy the Synology DS1821+ if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Synology DiskStation DS920+ vs Synology DS1821+ — FAQ

Synology DiskStation DS920+ vs Synology DS1821+: which is better?

Is Synology DiskStation DS920+ better than Synology DS1821+?

No, Synology DS1821+ scores higher (55 vs 47).

Which is cheaper, Synology DiskStation DS920+ or Synology DS1821+?

Synology DiskStation DS920+ is cheaper at $399 vs $799 for the Synology DS1821+.

Who should buy the Synology DiskStation DS920+?

Choose the Synology DiskStation DS920+ if budget is your top priority — it offers competitive specs at a lower price point.

Who should buy the Synology DS1821+?

Buy the Synology DS1821+ if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Reviewed by VersusMatrix Editorial Team

Last updated: May 10, 2026

Editorial guidelines

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.