Between the 990 PRO 2TB and Blue SN5000 2TB, the 990 PRO 2TB comes out ahead in sequential write and sequential read, while the Blue SN5000 2TB wins on several specs. Overall, the 990 PRO 2TB scores 70.1 and the Blue SN5000 2TB scores 63.8 on our Mars Score.
Which should you buy?
The 990 PRO 2TB edges ahead on the Mars Score (70.1 vs 63.8), but the 6.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the 990 PRO 2TB if you care most about sequential write and sequential read. The biggest gaps in its favor are sequential write, sequential read, endurance (tbw).
The Blue SN5000 2TB similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable capacity, interface, so those specs don't separate the two — focus on the differences below.
Bottom line: the 990 PRO 2TB is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Samsung - 990 PRO 2TB wins
- ▲Sequential write — 38.00% more. 6900 MB/s vs 5000 MB/s.
- ▲Sequential read — 35.45% more. 7450 MB/s vs 5500 MB/s.
- ▲Endurance (TBW) — 33.33% more. 1200 vs 900.
Why WD - Blue SN5000 2TB wins
- No decisive advantages.
Spec comparison
Capacity
| Spec | Samsung - 990 PRO 2TB | WD - Blue SN5000 2TB |
|---|---|---|
| Capacity | 2000 GB | 2000 GB |
Performance
| Spec | Samsung - 990 PRO 2TB | WD - Blue SN5000 2TB |
|---|---|---|
| Sequential read | 7450 MB/slead | 5500 MB/s |
| Sequential write | 6900 MB/slead | 5000 MB/s |
| Interface | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Form factor | M.2 2280 | M.2 2280 |
Endurance
| Spec | Samsung - 990 PRO 2TB | WD - Blue SN5000 2TB |
|---|---|---|
| Endurance (TBW)ⓘ | 1200lead | 900 |
| Warranty | 5 yrs | 5 yrs |
Spec-level deep dives
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