ADATA SE920 500GB
USB4 · 3800/3700 MB/s · 500GB
Samsung 990 PRO 2 TB
PCIe 4.0 · 7450 MB/s · TLC
Samsung 990 PRO 2 TB takes it — here’s why.
In our weighted Specdex score, ADATA SE920 500GB lands at 90 and Samsung 990 PRO 2 TB at 91. That puts Samsung 990 PRO 2 TB ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.
Pick ADATA SE920 500GB if…
- ✓Plug-and-play (portable)
- ✓Competitive per-GB cost
- ✓3-5 year warranties typical
Pick Samsung 990 PRO 2 TB if…
- ✓Top-tier PCIe 4.0 sustained speeds
- ✓Magician software ecosystem
- ✓5-year warranty
Winner by scenario
Derived from the sub-score breakdown · not a separate testEndurance & reliability
Samsung 990 PRO 2 TBWrite endurance and long-term dependability
Samsung 990 PRO 2 TB leads on endurance (92 vs 84).
Value for money
TieSpecdex score per dollar at MSRP
Effectively tied — similar score-per-dollar at MSRP.
Score breakdown
Specs side-by-side
| Spec | ADATA SE920 500GB | Samsung 990 PRO 2 TB |
|---|---|---|
| Interface | USB4 | PCIe 4.0 x4 NVMe 2.0 |
| Capacity | ▲ 500GB | 1 / 2 / 4 TB |
| Read/Write | 3800/3700 MB/s | — |
| Release year | 2024 | — |
| Sequential read | — | 7450 MB/s |
| Sequential write | — | 6900 MB/s |
| NAND | — | V-NAND TLC |
| Endurance | — | 1200 TBW (2TB) |
| Warranty | — | 5 years |
ADATA SE920 500GB
- +Plug-and-play (portable)
- +Competitive per-GB cost
- +3-5 year warranties typical
- −Portable variants are USB-only
- −SATA models capped ~550 MB/s
- −DRAM-less drives slower sustained
Samsung 990 PRO 2 TB
- +Top-tier PCIe 4.0 sustained speeds
- +Magician software ecosystem
- +5-year warranty
- −Runs hot under sustained writes
- −Initial firmware ECC issues (since fixed)
- −Premium pricing
FAQ: ADATA SE920 500GB vs Samsung 990 PRO 2 TB
Which is better, ADATA SE920 500GB or Samsung 990 PRO 2 TB? +
Samsung 990 PRO 2 TB scores 91 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.
Is ADATA SE920 500GB worth the price? +
At $180, ADATA SE920 500GB delivers a Specdex score of 90 — strongest in read.
Is Samsung 990 PRO 2 TB worth the price? +
At $199, Samsung 990 PRO 2 TB delivers a Specdex score of 91 — strongest in software.
Does ADATA SE920 500GB or Samsung 990 PRO 2 TB 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.
Which is better for endurance & reliability, ADATA SE920 500GB or Samsung 990 PRO 2 TB? +
Samsung 990 PRO 2 TB — leads on endurance (92 vs 84). Write endurance and long-term dependability.