Western Digital
WD Black SN850X 2TB
PCIe 4.0 · 7,300 MB/s · Game Mode 2.0
90
/ 100
From $189
VS
Samsung 9100 Pro 2TB wins by 5
Samsung
Samsung 9100 Pro 2TB
PCIe 5.0 · 14.8 GB/s · TLC
95
/ 100
From $269
Specdex verdict
Samsung 9100 Pro 2TB takes it — here’s why.
In our weighted Specdex score, WD Black SN850X 2TB lands at 90 and Samsung 9100 Pro 2TB at 95. That puts Samsung 9100 Pro 2TB ahead by 5 points — a decisive margin driven mostly by its strengths in the categories below.
Pick WD Black SN850X 2TB if…
- ✓Fastest PCIe 4.0 in real-world games
- ✓Excellent endurance
- ✓Optional heatsink for PS5
Pick Samsung 9100 Pro 2TB if…
- ✓Class-leading PCIe 5.0 sequentials
- ✓5-year warranty
- ✓Magician software polished
WD Black SN850X 2TB 90
vs 95 Samsung 9100 Pro 2TB
Score breakdown
WD Black SN850X 2TB
90 read 94
write 92
endurance 90
value 88
speed 0
software 0
reliability 0
Samsung 9100 Pro 2TB
95 read 0
write 0
endurance 92
value 80
speed 100
software 96
reliability 92
Specs side-by-side
| Spec | WD Black SN850X 2TB | Samsung 9100 Pro 2TB |
|---|---|---|
| Interface | PCIe 4.0 x4 NVMe | PCIe 5.0 x4 NVMe 2.0 |
| Read speed | 7,300 MB/s | — |
| Write speed | 6,600 MB/s | — |
| TBW | 1200 | — |
| Form | M.2 2280 | — |
| Capacity | — | 1 / 2 / 4 / 8 TB |
| Sequential read | — | 14800 MB/s |
| Sequential write | — | 13400 MB/s |
| NAND | — | Samsung V8 V-NAND TLC |
| Endurance | — | 1200 TBW (2TB) |
| Warranty | — | 5 years |
WD Black SN850X 2TB
Pros
- +Fastest PCIe 4.0 in real-world games
- +Excellent endurance
- +Optional heatsink for PS5
Cons
- −PCIe 4.0 only
- −Runs warm without heatsink
- −Software dated
Samsung 9100 Pro 2TB
Pros
- +Class-leading PCIe 5.0 sequentials
- +5-year warranty
- +Magician software polished
Cons
- −Runs hot — heatsink recommended
- −Premium pricing
- −TLC vs newer V-NAND mixed reception
FAQ: WD Black SN850X 2TB vs Samsung 9100 Pro 2TB
Which is better, WD Black SN850X 2TB or Samsung 9100 Pro 2TB? +
Samsung 9100 Pro 2TB scores 95 on our weighted rubric — ahead by 5. Your best pick depends on the sub-scores above.
Is WD Black SN850X 2TB worth the price? +
At $189, WD Black SN850X 2TB delivers a Specdex score of 90 — strongest in read.
Is Samsung 9100 Pro 2TB worth the price? +
At $269, Samsung 9100 Pro 2TB delivers a Specdex score of 95 — strongest in speed.
Does WD Black SN850X 2TB or Samsung 9100 Pro 2TB last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.