Western Digital
WD_BLACK SN850X 2 TB
PCIe 4.0 · 7300 MB/s · Heatsink option
90
/ 100
From $219
VS
ADATA
ADATA SE920 1TB
USB4 · 3800/3700 MB/s · 1TB
90
/ 100
From $306
Specdex verdict
Dead heat — it comes down to priorities.
In our weighted Specdex score, WD_BLACK SN850X 2 TB lands at 90 and ADATA SE920 1TB at 90. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick WD_BLACK SN850X 2 TB if…
- ✓Best PCIe 4.0 sustained speed under load
- ✓5-year warranty
- ✓Excellent gaming/load times
Pick ADATA SE920 1TB if…
- ✓Plug-and-play (portable)
- ✓Competitive per-GB cost
- ✓3-5 year warranties typical
WD_BLACK SN850X 2 TB 90
vs 90 ADATA SE920 1TB
Score breakdown
WD_BLACK SN850X 2 TB
90 speed 92
endurance 92
software 86
value 88
reliability 96
read 0
write 0
ADATA SE920 1TB
90 speed 0
endurance 84
software 0
value 88
reliability 0
read 88
write 84
Specs side-by-side
| Spec | WD_BLACK SN850X 2 TB | ADATA SE920 1TB |
|---|---|---|
| Capacity | 1 / 2 / 4 / 8 TB | 1TB |
| Interface | PCIe 4.0 x4 NVMe 1.4 | USB4 |
| Sequential read | 7300 MB/s | — |
| Sequential write | 6600 MB/s | — |
| NAND | BiCS5 TLC | — |
| Endurance | 1200 TBW (2TB) | — |
| Warranty | 5 years | — |
| Read/Write | — | 3800/3700 MB/s |
| Release year | — | 2024 |
WD_BLACK SN850X 2 TB
Pros
- +Best PCIe 4.0 sustained speed under load
- +5-year warranty
- +Excellent gaming/load times
Cons
- −PCIe 4.0 not 5.0
- −Game Mode 2.0 is software gimmick
- −Premium pricing per TB
ADATA SE920 1TB
Pros
- +Plug-and-play (portable)
- +Competitive per-GB cost
- +3-5 year warranties typical
Cons
- −Portable variants are USB-only
- −SATA models capped ~550 MB/s
- −DRAM-less drives slower sustained
FAQ: WD_BLACK SN850X 2 TB vs ADATA SE920 1TB
Which is better, WD_BLACK SN850X 2 TB or ADATA SE920 1TB? +
Both score 90 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is WD_BLACK SN850X 2 TB worth the price? +
At $219, WD_BLACK SN850X 2 TB delivers a Specdex score of 90 — strongest in reliability.
Is ADATA SE920 1TB worth the price? +
At $306, ADATA SE920 1TB delivers a Specdex score of 90 — strongest in read.
Does WD_BLACK SN850X 2 TB or ADATA SE920 1TB 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.