Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Sabrent - Rocket 5 2TB | Seagate - FireCuda 540 2TB |
|---|---|---|
| Endurance (TBW) | 1200 | 2000 |
| Sequential read | 14000 MB/s | 10000 MB/s |
| Sequential write | 12000 MB/s | 10000 MB/s |
Between the Rocket 5 2TB and FireCuda 540 2TB, the Rocket 5 2TB comes out ahead in sequential read / sequential write, while the FireCuda 540 2TB wins on endurance (tbw). Overall, the Rocket 5 2TB scores 84.4 and the FireCuda 540 2TB scores 78.3 on our Mars Score.
Which should you buy?
The Rocket 5 2TB edges ahead on the Mars Score (84.4 vs 78.3), but the 6.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Rocket 5 2TB if you care most about sequential read / sequential write. The biggest gaps in its favor are sequential read, sequential write. The single most decisive one: Sequential read — 40.00% more. 14000 MB/s vs 10000 MB/s.
Pick the FireCuda 540 2TB if you care most about endurance (tbw). Its strongest claims are endurance (tbw). The single most decisive one: Endurance (TBW) — 66.67% more. 2000 vs 1200.
Both ship with comparable capacity, interface, so those specs do not separate the two — focus on the differences below.
Bottom line: the Rocket 5 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: Sabrent - Rocket 5 2TB or Seagate - FireCuda 540 2TB?
Sabrent - Rocket 5 2TB leads the current Mars Score by 6.1 points.The more useful decision is the trade-off behind that result: compare sequential read, sequential write against the way you will actually use the product.
Choose Sabrent - Rocket 5 2TB if…
Sabrent - Rocket 5 2TB has the measurable edge on read mbps, write mbps.
Choose Seagate - FireCuda 540 2TB if…
Seagate - FireCuda 540 2TB has the measurable edge on tbw.
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 Sabrent - Rocket 5 2TB wins
- ▲Sequential read — 40.00% more. 14000 MB/s vs 10000 MB/s.
- ▲Sequential write — 20.00% more. 12000 MB/s vs 10000 MB/s.
Why Seagate - FireCuda 540 2TB wins
- ▲Endurance (TBW) — 66.67% more. 2000 vs 1200.
Spec comparison
Capacity
| Spec | Sabrent - Rocket 5 2TB | Seagate - FireCuda 540 2TB |
|---|---|---|
| Capacity | 2000 GB | 2000 GB |
Performance
| Spec | Sabrent - Rocket 5 2TB | Seagate - FireCuda 540 2TB |
|---|---|---|
| Sequential read | 14000 MB/slead | 10000 MB/s |
| Sequential write | 12000 MB/slead | 10000 MB/s |
| Interface | PCIe 5.0 x4 | PCIe 5.0 x4 |
| Form factor | M.2 2280 | M.2 2280 |
Endurance
| Spec | Sabrent - Rocket 5 2TB | Seagate - FireCuda 540 2TB |
|---|---|---|
| Endurance (TBW)ⓘ | 1200 | 2000lead |
| Warranty | 5 yrs | 5 yrs |