Western Digital My Cloud EX4100 vs Synology DS1821+
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AI Matrix
Powered by Claude AIWestern Digital My Cloud EX4100 narrowly beats the Synology DS1821+ in the nas storage category, especially in value ($499 vs $799), scoring 51 vs 47. If you want the better overall nas storage, Western Digital My Cloud EX4100 is the recommended choice.
3 Reasons Why Western Digital My Cloud EX4100 Is Better
- 1.Lower price: $499 vs $799
- 2.Better value score: 74 vs 52
- 3.Higher overall score: 51 vs 47
What are you giving up?
Picking Western Digital My Cloud EX4100 over Synology DS1821+ means trading these off.
You give up
- −More RAM: 4GB vs 2GB
You gain
- +$300 cheaper ($499 vs $799)
Spec Comparison
Western Digital My Cloud EX4100Synology DS1821+
Score Breakdown
Western Digital My Cloud EX4100Synology DS1821+
35
Drive Bays25% weight
35Tie
74
Price20% weight
52Western Digital My Cloud EX4100 Winner
0
RAM20% weight
3Tie
99
Power Usage15% weight
99Tie
94
Noise10% weight
92Tie
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.
Western Digital My Cloud EX4100
Winner✓ Pros
- ●Lower price: $499 vs $799
- ●Better value for money
✗ Cons
- ●Less RAM: 2GB vs 4GB
Synology DS1821+
✓ Pros
- ●More RAM: 4GB vs 2GB
✗ Cons
- ●Higher price: $799 vs $499
- ●Higher price relative to value
Spec Comparison
| Spec | Western Digital My Cloud EX4100W | Synology DS1821+ |
|---|---|---|
| Price | 499$✓ | 799$ |
| RAM | 2GB | 4GB✓ |
| OS | My Cloud OS 3 | DSM 7.2 |
| Weight | 1100g | 1100g |
| Dimensions | 170 x 150 x 220 mm | 260 x 193 x 166 mm |
| Colors | Black | Black |
Who Should Buy
Buy Western Digital My Cloud EX4100 if…
Buy the Western Digital My Cloud EX4100 if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
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.
Western Digital My Cloud EX4100 vs Synology DS1821+ — FAQ
Western Digital My Cloud EX4100 vs Synology DS1821+: which is better?
Western Digital My Cloud EX4100 narrowly beats the Synology DS1821+ in the nas storage category, especially in value ($499 vs $799), scoring 51 vs 47. If you want the better overall nas storage, Western Digital My Cloud EX4100 is the recommended choice.
Is Western Digital My Cloud EX4100 better than Synology DS1821+?
Yes, Western Digital My Cloud EX4100 scores higher overall (36 vs 60).
Which is cheaper, Western Digital My Cloud EX4100 or Synology DS1821+?
Western Digital My Cloud EX4100 is cheaper at $499 vs $799 for the Synology DS1821+.
Who should buy the Western Digital My Cloud EX4100?
Buy the Western Digital My Cloud EX4100 if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
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.
Which has more RAM, Western Digital My Cloud EX4100 or Synology DS1821+?
Synology DS1821+ has more RAM (4GB vs 2GB), which helps with multitasking.
Related Comparisons
Full Western Digital My Cloud EX4100 review →Full Synology DS1821+ review →All Western Digital 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.