ADATA Ultimate SU650 1TB vs PNY CS900 1TB
The site holds no current price for at least one of these, so what follows compares specifications alone.
| Specification | ADATAUltimate SU650 1TB | PNYCS900 1TB |
|---|---|---|
| Capacity (GB) | 1000 | 1000 |
| Sequential read (MB/s) | 520 | 535better |
| Sequential write (MB/s) | 450 | 515better |
| Current best price | — | 122,00 €at Amazon.de · captured 2026-09-13 |
| Price per TB | — | 122,00 € |
| Warranty (years) | 3 | 3 |
| NAND type | — | tlc |
How these two compare
Sequential throughput
ADATA Ultimate SU650 1TB is rated 520 MB/s read and 450 MB/s write; PNY CS900 1TB, 535 MB/s read and 515 MB/s write. The SATA link tops out around 550 MB/s each way, and both work against that ceiling; the more telling differences between SATA drives are how each holds up under sustained load, whether it carries a DRAM cache, and how much writing it is rated to take.
NAND and warranty
NAND: ADATA Ultimate SU650 1TB's NAND is not stated and PNY CS900 1TB uses TLC. The tier is bits per cell — SLC, MLC, TLC and QLC from one to four — trading density against endurance and sustained-write speed: QLC is cheapest per gigabyte, TLC the mainstream balance, and the denser the cell the sooner sustained writes taper. On the cover: ADATA Ultimate SU650 1TB carries a 3-year warranty, PNY CS900 1TB carries a 3-year warranty. The length is the maker's own vote of confidence, and on an SSD it tends to track the endurance rating — a longer warranty usually meaning more rated writes.
Which to buy
With a price missing for at least one side, there is no cost verdict to give. What separates two otherwise-similar drives is up in the sections above — sustained and random behaviour, whether there is a DRAM cache, the flash tier and the warranty — so weigh those against what your build needs.
Common questions about this pair
- Which is faster, ADATA Ultimate SU650 1TB or PNY CS900 1TB?
- ADATA Ultimate SU650 1TB is rated 520 MB/s read and 450 MB/s write; PNY CS900 1TB, 535 MB/s read and 515 MB/s write. The SATA link tops out around 550 MB/s each way, and both work against that ceiling; the more telling differences between SATA drives are how each holds up under sustained load, whether it carries a DRAM cache, and how much writing it is rated to take.
- Should you buy ADATA Ultimate SU650 1TB or PNY CS900 1TB?
- With a price missing for at least one side, there is no cost verdict to give. What separates two otherwise-similar drives is up in the sections above — sustained and random behaviour, whether there is a DRAM cache, the flash tier and the warranty — so weigh those against what your build needs.