Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Lexar - NM800 Pro 2TB | Samsung - 870 EVO 1TB |
|---|---|---|
| Sequential read | 7500 MB/s | 560 MB/s |
| Sequential write | 6500 MB/s | 530 MB/s |
| Endurance (TBW) | 1500 | 600 |
| Capacity | 2000 GB | 1000 GB |
| Interface | PCIe 4.0 x4 | SATA III |
Between the NM800 Pro 2TB and 870 EVO 1TB, the NM800 Pro 2TB comes out ahead in sequential read / sequential write, while the 870 EVO 1TB wins on several specs. Overall, the NM800 Pro 2TB scores 68.8 and the 870 EVO 1TB scores 43.5 on our Mars Score.
Which should you buy?
The NM800 Pro 2TB is the clear pick on raw spec strength, leading by 25.3 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.
Pick the NM800 Pro 2TB if you care most about sequential read / sequential write. The biggest gaps in its favor are sequential read, sequential write, endurance (tbw), among others. The single most decisive one: Sequential read — 1239.29% more. 7500 MB/s vs 560 MB/s.
The 870 EVO 1TB similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: the NM800 Pro 2TB is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Lexar - NM800 Pro 2TB or Samsung - 870 EVO 1TB?
Lexar - NM800 Pro 2TB leads the current Mars Score by 25.3 points.The more useful decision is the trade-off behind that result: compare capacity, sequential read, sequential write, interface against the way you will actually use the product.
Choose Lexar - NM800 Pro 2TB if…
Lexar - NM800 Pro 2TB has the measurable edge on read mbps, write mbps, tbw.
Choose Samsung - 870 EVO 1TB if…
Samsung - 870 EVO 1TB does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Lexar - NM800 Pro 2TB wins
- ▲Sequential read — 1239.29% more. 7500 MB/s vs 560 MB/s.
- ▲Sequential write — 1126.42% more. 6500 MB/s vs 530 MB/s.
- ▲Endurance (TBW) — 150.00% more. 1500 vs 600.
- ▲Capacity — 100.00% more. 2000 GB vs 1000 GB.
- ▲Interface: PCIe 4.0 x4 (vs SATA III).
Why Samsung - 870 EVO 1TB wins
- No decisive advantages.
Spec comparison
Capacity
| Spec | Lexar - NM800 Pro 2TB | Samsung - 870 EVO 1TB |
|---|---|---|
| Capacity | 2000 GBlead | 1000 GB |
Performance
| Spec | Lexar - NM800 Pro 2TB | Samsung - 870 EVO 1TB |
|---|---|---|
| Sequential read | 7500 MB/slead | 560 MB/s |
| Sequential write | 6500 MB/slead | 530 MB/s |
| Interface | PCIe 4.0 x4lead | SATA III |
| Form factor | M.2 2280lead | 2.5" SATA |
Endurance
| Spec | Lexar - NM800 Pro 2TB | Samsung - 870 EVO 1TB |
|---|---|---|
| Endurance (TBW)ⓘ | 1500lead | 600 |
| Warranty | 5 yrs | 5 yrs |