Seagate FireCuda 530 2TB vs Silicon Power XS70 2TB
At least one of these has no price the site currently tracks, so what follows weighs specifications alone.
| Specification | SeagateFireCuda 530 2TB | Silicon PowerXS70 2TB |
|---|---|---|
| Capacity (GB) | 2000 | 2000 |
| Sequential read (MB/s) | 7300 | 7300 |
| Sequential write (MB/s) | 6900better | 6800 |
| Current best price | $399.99at Amazon.ca · captured 2026-09-13 | — |
| Price per TB | $200.00 | — |
| DRAM cache | Yes | — |
| NAND type | tlc | tlc |
| Controller | Phison E18 | — |
How these two compare
Sequential throughput
Seagate FireCuda 530 2TB states 7300 MB/s read and 6900 MB/s write; Silicon Power XS70 2TB states 7300 MB/s read and 6800 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
DRAM cache
On the cache question: Seagate FireCuda 530 2TB carries a DRAM cache, and the catalog does not state whether Silicon Power XS70 2TB carries a DRAM cache. The DRAM keeps the flash-translation table close, sparing a lookup on nearly every access; a drive without it leans on host memory or its own flash, which usually shows as slower sustained random writes rather than in the headline sequential numbers.
NAND, controller and warranty
On the flash itself: Seagate FireCuda 530 2TB uses TLC, and Silicon Power XS70 2TB uses TLC. NAND tiers count bits per cell — more bits pack more capacity into the same silicon but shorten write endurance and slow sustained writes, which is why QLC sits below TLC on lasting performance even when the sequential numbers match. Controller: Seagate FireCuda 530 2TB uses the Phison E18 and Silicon Power XS70 2TB's controller is not stated. The controller runs wear-levelling, error correction and the mapping table, so it shapes sustained and random behaviour as much as the flash does — though the model name alone predicts little without testing. Seagate FireCuda 530 2TB carries a 5-year warranty and Silicon Power XS70 2TB does not state one — the length the maker will stand behind the drive, and usually a proxy for the endurance it is rated to.
Which to buy
The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.
Common questions about this pair
- Which is faster, Seagate FireCuda 530 2TB or Silicon Power XS70 2TB?
- Seagate FireCuda 530 2TB states 7300 MB/s read and 6900 MB/s write; Silicon Power XS70 2TB states 7300 MB/s read and 6800 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
- Should you buy Seagate FireCuda 530 2TB or Silicon Power XS70 2TB?
- The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.