Left · Samsung
Samsung 9100 Pro 4TB
Spec score
Spec score 99
$1,000
Amazon US, Oct 24
Samsung 9100 Pro 4TB against WD Black SN850X 4TB
Samsung 9100 Pro 4TB leads on the overall index. The price beside each button is the Amazon US reading where ScoutPrices has one; the comparison below is worked on typical prices.
Right · Western Digital
WD Black SN850X 4TB
Spec score
Spec score 91
$787
Amazon US, Oct 24
Head to head
Scores
Indices out of 100 on ScoutSpecs' own scale, one per kind of work. They are not frames per second and not a measurement of any one sample.
Spec score
Samsung 9100 Pro 4TB: 99
WD Black SN850X 4TB: 91
8 ptsto the left
Price and value
Worked on typical prices, the figures the comparison is built on.
Value, points per $100
Samsung 9100 Pro 4TB: 7.7
WD Black SN850X 4TB: 14
82%to the right
Typical price
Samsung 9100 Pro 4TB: $1,290
WD Black SN850X 4TB: $650
$640to the right
From the spec sheets
Capacity
Samsung 9100 Pro 4TB: 4000 GB
WD Black SN850X 4TB: 4000 GB
level
Sequential read
Samsung 9100 Pro 4TB: 14700 MB/s
WD Black SN850X 4TB: 7300 MB/s
101%to the left
Sequential write
Samsung 9100 Pro 4TB: 13400 MB/s
WD Black SN850X 4TB: 6600 MB/s
103%to the left
The verdict
- The Samsung 9100 Pro 4TB scores 9% higher on the ScoutSpecs index.
- The WD Black SN850X 4TB typically costs $640 less.
- Per dollar, the WD Black SN850X 4TB is the better buy: 14 points per $100 against 7.7.
Specifications
| Spec | Samsung 9100 Pro 4TB | WD Black SN850X 4TB |
|---|---|---|
| Interface | NVMe PCIe 5.0 | NVMe PCIe 4.0 |
| Capacity | 4 TB | 4 TB |
| Sequential read | 14,700 MB/s (better) | 7,300 MB/s |
| Sequential write | 13,400 MB/s (better) | 6,600 MB/s |
| DRAM cache | Yes | Yes |
| Brand | Samsung | Western Digital |
| Released | 2025 (better) | 2023 |
| Typical price | $1,290 | $650 (better) |
The better figure of each pair is in green, with a tick.