Samsung 870 EVO 1TB vs SanDisk Ultra 3D SATA 1TB
At least one of these has no price the site currently tracks, so what follows weighs specifications alone.
| Specification | Samsung870 EVO 1TB | SanDiskUltra 3D SATA 1TB |
|---|---|---|
| Capacity (GB) | 1000 | 1000 |
| Sequential read (MB/s) | 560 | 560 |
| Sequential write (MB/s) | 530better | 520 |
| Current best price | 192,20 €at Amazon.fr · captured 2026-09-13 | — |
| Price per TB | 192,20 € | — |
| DRAM cache | Yes | — |
| NAND type | tlc | tlc |
| Controller | Samsung MKX controller | — |
How these two compare
Sequential throughput
Samsung 870 EVO 1TB reads at 560 MB/s and writes at 530 MB/s; SanDisk Ultra 3D SATA 1TB reads at 560 MB/s and writes at 520 MB/s. Both ride the SATA bus, which caps sequential transfer near 550 MB/s in either direction — the ceiling every SATA drive works against — so what more decisively separates them is sustained and random behaviour, the DRAM cache, and endurance.
DRAM cache
On the cache question: Samsung 870 EVO 1TB carries a DRAM cache, and the catalog does not state whether SanDisk Ultra 3D SATA 1TB 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: Samsung 870 EVO 1TB uses TLC, and SanDisk Ultra 3D SATA 1TB 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: Samsung 870 EVO 1TB uses the Samsung MKX controller and SanDisk Ultra 3D SATA 1TB'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. Samsung 870 EVO 1TB carries a 5-year warranty and SanDisk Ultra 3D SATA 1TB 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, Samsung 870 EVO 1TB or SanDisk Ultra 3D SATA 1TB?
- Samsung 870 EVO 1TB reads at 560 MB/s and writes at 530 MB/s; SanDisk Ultra 3D SATA 1TB reads at 560 MB/s and writes at 520 MB/s. Both ride the SATA bus, which caps sequential transfer near 550 MB/s in either direction — the ceiling every SATA drive works against — so what more decisively separates them is sustained and random behaviour, the DRAM cache, and endurance.
- Should you buy Samsung 870 EVO 1TB or SanDisk Ultra 3D SATA 1TB?
- 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.