Samsung 990 Pro 4TB vs Western Digital Black SN850X
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AI Matrix
Powered by Claude AIWestern Digital Black SN850X edges out the Samsung 990 Pro 4TB in the ssd storage category, especially in value ($199 vs $499), scoring 48 vs 36. If you want the better overall ssd storage, Western Digital Black SN850X is the recommended choice.
5 Reasons Why Western Digital Black SN850X Is Better
- 1.Lower price: $199 vs $499
- 2.Better performance score: 51 vs 35
- 3.Better display rating: 49 vs 35
- 4.Better value score: 79 vs 40
- 5.Higher overall score: 48 vs 36
What are you giving up?
Picking Western Digital Black SN850X over Samsung 990 Pro 4TB means trading these off.
You give up
Nothing meaningful — Western Digital Black SN850X matches or beats Samsung 990 Pro 4TB on every measured spec.
You gain
- +$300 cheaper ($199 vs $499)
Spec Comparison
Samsung 990 Pro 4TBWestern Digital Black SN850X
Score Breakdown
Samsung 990 Pro 4TBWestern Digital Black SN850X
40
Price20% weight
79Western Digital Black SN850X Winner
35
Read Speed30% weight
51Western Digital Black SN850X Winner
35
Write Speed20% weight
49Western Digital Black SN850X Winner
35
Capacity15% weight
35Tie
35
Endurance15% weight
14Samsung 990 Pro 4TB Winner
Scores are relative within the ssd storagecategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
Samsung 990 Pro 4TB
✓ Pros
- ●Better design score
✗ Cons
- ●Higher price: $499 vs $199
- ●Higher price relative to value
- ●Lower display score
Western Digital Black SN850X
Winner✓ Pros
- ●Lower price: $199 vs $499
- ●Higher performance score
- ●Better display score
Spec Comparison
| Spec | Samsung 990 Pro 4TB | Western Digital Black SN850XW |
|---|---|---|
| Price | 499$ | 199$✓ |
Who Should Buy
Buy Samsung 990 Pro 4TB if…
The Samsung 990 Pro 4TB is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy Western Digital Black SN850X if…
Buy the Western Digital Black SN850X if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Samsung 990 Pro 4TB vs Western Digital Black SN850X — FAQ
Samsung 990 Pro 4TB vs Western Digital Black SN850X: which is better?
Western Digital Black SN850X edges out the Samsung 990 Pro 4TB in the ssd storage category, especially in value ($199 vs $499), scoring 48 vs 36. If you want the better overall ssd storage, Western Digital Black SN850X is the recommended choice.
Is Samsung 990 Pro 4TB better than Western Digital Black SN850X?
No, Western Digital Black SN850X scores higher (51 vs —).
Which is cheaper, Samsung 990 Pro 4TB or Western Digital Black SN850X?
Western Digital Black SN850X is cheaper at $199 vs $499 for the Samsung 990 Pro 4TB.
Who should buy the Samsung 990 Pro 4TB?
The Samsung 990 Pro 4TB is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Who should buy the Western Digital Black SN850X?
Buy the Western Digital Black SN850X if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Full Samsung 990 Pro 4TB review →Full Western Digital Black SN850X review →All Samsung SSD Storage →All WD SSD Storage →
Reviewed by VersusMatrix Editorial Team
Last updated: April 28, 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.