Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Samsung - 980 PRO 2TB | SK hynix - Platinum P51 2TB |
|---|---|---|
| Sequential write | 5100 MB/s | 13400 MB/s |
| Sequential read | 7000 MB/s | 14700 MB/s |
| Interface | PCIe 4.0 x4 | PCIe 5.0 x4 |
Between the 980 PRO 2TB and Platinum P51 2TB, the 980 PRO 2TB comes out ahead in several specs, while the Platinum P51 2TB wins on sequential write / sequential read. Overall, the 980 PRO 2TB scores 66.7 and the Platinum P51 2TB scores 85.4 on our Mars Score.
Which should you buy?
The Platinum P51 2TB is the clear pick on raw spec strength, leading by 18.7 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 980 PRO 2TB does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the Platinum P51 2TB if you care most about sequential write / sequential read. Its strongest claims are sequential write, sequential read, interface. The single most decisive one: Sequential write — 162.75% more. 13400 MB/s vs 5100 MB/s.
Both ship with comparable capacity, endurance (tbw), so those specs do not separate the two — focus on the differences below.
Bottom line: the Platinum P51 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: Samsung - 980 PRO 2TB or SK hynix - Platinum P51 2TB?
SK hynix - Platinum P51 2TB leads the current Mars Score by 18.7 points.The more useful decision is the trade-off behind that result: compare sequential read, sequential write, interface against the way you will actually use the product.
Choose Samsung - 980 PRO 2TB if…
Samsung - 980 PRO 2TB does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose SK hynix - Platinum P51 2TB if…
SK hynix - Platinum P51 2TB has the measurable edge on write mbps, read mbps, interface.
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 Samsung - 980 PRO 2TB wins
- No decisive advantages.
Why SK hynix - Platinum P51 2TB wins
- ▲Sequential write — 162.75% more. 13400 MB/s vs 5100 MB/s.
- ▲Sequential read — 110.00% more. 14700 MB/s vs 7000 MB/s.
- ▲Interface: PCIe 5.0 x4 (vs PCIe 4.0 x4).
Spec comparison
Capacity
| Spec | Samsung - 980 PRO 2TB | SK hynix - Platinum P51 2TB |
|---|---|---|
| Capacity | 2000 GB | 2000 GB |
Performance
| Spec | Samsung - 980 PRO 2TB | SK hynix - Platinum P51 2TB |
|---|---|---|
| Sequential read | 7000 MB/s | 14700 MB/slead |
| Sequential write | 5100 MB/s | 13400 MB/slead |
| Interface | PCIe 4.0 x4 | PCIe 5.0 x4lead |
| Form factor | M.2 2280 | M.2 2280 |
Endurance
| Spec | Samsung - 980 PRO 2TB | SK hynix - Platinum P51 2TB |
|---|---|---|
| Endurance (TBW)ⓘ | 1200 | 1200 |
| Warranty | 5 yrs | 5 yrs |