Between the NM800 Pro 2TB and FireCuda 540 2TB, the NM800 Pro 2TB comes out ahead in several specs, while the FireCuda 540 2TB wins on sequential write and sequential read. Overall, the NM800 Pro 2TB scores 69.6 and the FireCuda 540 2TB scores 79.1 on our Mars Score.
Which should you buy?
The FireCuda 540 2TB is the clear pick on raw spec strength, leading by 9.5 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The NM800 Pro 2TB doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the FireCuda 540 2TB if you care most about sequential write and sequential read. Its strongest claims are sequential write, sequential read, endurance (tbw), among others.
Both ship with comparable capacity, so those specs don't separate the two — focus on the differences below.
Bottom line: the FireCuda 540 2TB is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Lexar - NM800 Pro 2TB wins
- No decisive advantages.
Why Seagate - FireCuda 540 2TB wins
- ▲Sequential write — 53.85% more. 10000 MB/s vs 6500 MB/s.
- ▲Sequential read — 33.33% more. 10000 MB/s vs 7500 MB/s.
- ▲Endurance (TBW) — 33.33% more. 2000 vs 1500.
- ▲Interface: PCIe 5.0 x4 (vs PCIe 4.0 x4).
Spec comparison
Capacity
| Spec | Lexar - NM800 Pro 2TB | Seagate - FireCuda 540 2TB |
|---|---|---|
| Capacity | 2000 GB | 2000 GB |
Performance
| Spec | Lexar - NM800 Pro 2TB | Seagate - FireCuda 540 2TB |
|---|---|---|
| Sequential read | 7500 MB/s | 10000 MB/slead |
| Sequential write | 6500 MB/s | 10000 MB/slead |
| Interface | PCIe 4.0 x4 | PCIe 5.0 x4lead |
| Form factor | M.2 2280 | M.2 2280 |
Endurance
| Spec | Lexar - NM800 Pro 2TB | Seagate - FireCuda 540 2TB |
|---|---|---|
| Endurance (TBW)ⓘ | 1500 | 2000lead |
| Warranty | 5 yrs | 5 yrs |
Frequently asked
Spec-level deep dives
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