Left · Samsung
Samsung 990 Pro 4TB
Spec score
Spec score 91
$800
Amazon US, Oct 24
Samsung 990 Pro 4TB against WD Black SN850X 4TB
Level on the overall index; the details below decide it. 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 990 Pro 4TB: 91
WD Black SN850X 4TB: 91
level
Price and value
Worked on typical prices, the figures the comparison is built on.
Value, points per $100
Samsung 990 Pro 4TB: 9.3
WD Black SN850X 4TB: 14
51%to the right
Typical price
Samsung 990 Pro 4TB: $980
WD Black SN850X 4TB: $650
$330to the right
From the spec sheets
Capacity
Samsung 990 Pro 4TB: 4000 GB
WD Black SN850X 4TB: 4000 GB
level
Sequential read
Samsung 990 Pro 4TB: 7450 MB/s
WD Black SN850X 4TB: 7300 MB/s
2%to the left
Sequential write
Samsung 990 Pro 4TB: 6900 MB/s
WD Black SN850X 4TB: 6600 MB/s
5%to the left
The verdict
- Samsung 990 Pro 4TB and WD Black SN850X 4TB are level on spec score.
- The WD Black SN850X 4TB typically costs $330 less.
- Per dollar, the WD Black SN850X 4TB is the better buy: 14 points per $100 against 9.3.
Specifications
| Spec | Samsung 990 Pro 4TB | WD Black SN850X 4TB |
|---|---|---|
| Interface | NVMe PCIe 4.0 | NVMe PCIe 4.0 |
| Capacity | 4 TB | 4 TB |
| Sequential read | 7,450 MB/s (better) | 7,300 MB/s |
| Sequential write | 6,900 MB/s (better) | 6,600 MB/s |
| DRAM cache | Yes | Yes |
| Brand | Samsung | Western Digital |
| Released | 2023 | 2023 |
| Typical price | $980 | $650 (better) |
The better figure of each pair is in green, with a tick.