One interface caps every drive on the shelf at the same ceiling · review
PNY CS900 1 TB SATA SSD review
A plain 1 TB SATA drive: 535/515 MB/s, 7 mm thick, 41 g, a 3-year limited warranty in the description, and no endurance rating, cache or controller named. $129.88 at Amazon on November 4, 2026.
Amazon.com listed it on October 26, 2026, but no current offer passed our price check, so no price is quoted. The Amazon.com page exists, but nobody was selling the unit; a listing in that state is often a third-party import.
Models on this shelf that Amazon.com did sell on that date:
A 1 TB internal solid-state drive in the 2.5-inch format, on SATA III at 6 Gb/s and backwards compatible with SATA II, rated up to 535 MB/s reading and 515 MB/s writing, sold as an easy and inexpensive replacement for a hard disk. The spec table adds a thickness of 7 mm and a weight of 41 g; the description adds a limited warranty of up to 3 years and a range from 120 GB to 2 TB. Amazon sold it at $129.88 on November 4, 2026, per Keepa.
Both rates, under the ceiling
The SATA III interface allows roughly 550 MB/s of payload, and these two figures sit just under it, as nearly every SATA drive’s do. That is not a criticism of the drive; it is the shape of the family. Choosing between two SATA drives on their sequential figures is choosing between two numbers fixed by the connector rather than by the design.
What is missing
No TBW, no MTBF, so the 3-year warranty is a term without a written total behind it. No memory type, no controller, no cache: the spec table’s cache line reads only “1 unknown modifier”. Those are the specifications that decide how a SATA drive behaves when a large copy fills it, and how long it lasts.
Fit
7 mm is the slimmer of the two common 2.5-inch heights, so the CS900 goes into thin laptop bays as well as desktops. A bay sized for 9.5 mm drives takes it too, sometimes with a spacer to stop it rattling.
The price
$129.88 for 1 TB at Amazon on November 4, 2026. Prices on SATA drives move often: compare the price per terabyte with the other drives on this shelf before ordering.
Prices quoted in this text were read on November 4, 2026. The live price is at the top of the page.
Where it holds up, and where it stops
Strengths
The interface revision is given with its rate and its SATA II compatibility, which an older machine needs to know
7 mm thick and 41 g, so it fits thin laptop bays as well as desktops
A 3-year limited warranty, stated in the product description
Compromises
No TBW and no MTBF, so nothing says how much writing the warranty covers
No memory type, no controller and no cache named, which is where two SATA drives actually differ
No random IOPS figure, the one that tells how the drive copes with small files
Specifications
Capacity
1 TB; the CS900 range runs from 120 GB to 2 TB
Form factor
2.5-inch, 7 mm thick, 41 g — per the listing's spec table
Interface
SATA III at 6 Gb/s, backwards compatible with SATA II — stated
Stated sequential read
Up to 535 MB/s — stated
Stated sequential write
Up to 515 MB/s — stated
Stated random IOPS
Not published
TBW rating
Not published
Stated MTBF
Not published
DRAM cache
Not published; the spec table's cache line reads only "1 unknown modifier"
Controller and NAND
Not published
Warranty
Up to 3 years, limited — stated in the product description
Amazon reference
B07Y5VDNT9
EAN
0751492629964
On Amazon.com
Amazon.com listed it on October 26, 2026, but no current offer passed our price check, so no price is quoted.
The questions that come up before an order
Why are all SATA SSDs quoted at nearly the same speed?
Because the interface is the limit, not the memory behind it. Six gigabits per second of signaling leaves roughly 550 MB/s of payload, and nearly every SATA drive reaches it. The 535/515 MB/s here separates almost nothing; the memory type, the controller and the written total do, and PNY publishes none of them.
Will it fit my laptop?
If the laptop takes a 2.5-inch SATA drive, yes: the CS900 is 7 mm thick, the slimmer of the two common heights. A bay made for 9.5 mm drives accepts it too, sometimes with a spacer.
What warranty does it have?
The product description states a limited warranty of up to 3 years. No TBW figure caps it on the listing, so check PNY's warranty terms if you plan heavy writing.
Does it work in an old SATA II computer?
Yes. It negotiates the older rate and works normally, just more slowly, at around half its sequential speed.
Our score
7.2/ 10
A plain, honest SATA drive: capacity, format, interface, both rates and a 3-year limited warranty are published; memory, controller, cache and endurance are not.
Against the rest of the network and storage gear
This network and storage gear share the category and the price bracket. Only what each one states is shown; an incomplete column would mislead.
Model
Price
Capacity
Form factor
Stated random IOPS
TBW rating
PNY CS900 1 TB SATA SSD
$130
1 TB; the CS900 range runs from 120 GB to 2 TB
2.5-inch, 7 mm thick, 41 g — per the listing's spec table
1 TB — printed in the title, in the maker’s unit and reported here in that unit without conversion
2.5-inch — printed in the title and repeated in the fifth bullet beside the interface and its rate
Not published on the listing — no figure in IOPS appears in the title or in the five bullets, which do publish two endurance quantities and a shock figure
Up to 480 TB — stated in the third bullet, in the same sentence as the shock figure and the population statistic. It is a volume of writing the drive is rated for and nothing more
1 TB — printed twice in the title, in the maker’s unit and reported here in that unit. The second bullet separately names up to 4 TB, which is the ceiling of the range rather than this drive
2.5-inch — printed in the title, which also names laptops and desktop machines as the intended homes for the drive
Not published on the listing — no figure in IOPS appears in the title or in the six bullets
Not published on the listing — no total in terabytes written appears, on a page whose third bullet publishes the term such a total normally bounds
1 TB — printed in the title and repeated in the first bullet, in the maker’s unit and reported here in that unit without conversion
2.5-inch — printed in the title and repeated in the fifth bullet. The description adds that the drive is available in 2.5-inch or M.2 form, and this listing is the 2.5-inch one
Not published on the listing — no figure in IOPS appears anywhere on the page, as on the other two listings here
Not published on the listing — no total in terabytes written appears. The previous-generation WD Blue on this shelf publishes up to 600 TB with the method behind it
What separates the models, in network and storage gear
If price decides: this model, at $130.
The buyer this one serves, among network and storage gear
An older desktop or a laptop with a 2.5-inch bay, where a spinning drive is being replaced and a plain, well-reviewed SATA drive is enough.
What this one costs among network and storage gear
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on November 4, 2026.
What buyers actually choose
Amazon reports what buyers took in the month before this page was last checked: at least 1,000.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Sources
Specifications: the manufacturer sheet for network and storage gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
1 TB · 2.5-inch · up to 540 MB/s read · dynamic write acceleration named · 256-bit hardware encryption to three named standards · three-year limited warranty · no write figure, no TBW, no MTBF
A one-terabyte drive that publishes a term, a named write acceleration mechanism and three encryption standards by name, and that never quantifies writing or endurance.
Best for: A machine where encryption to a named standard is a requirement and the drive will be read from far more than it is written to.
four 1 TB drives · 2.5-inch at 7 mm (0.28 in) · up to 550 MB/s · TLC 3D NAND with SLC caching · power loss protection and ECC named · three-year replacement
Four 1 TB drives for a NAS array, and the only listing on this shelf that names power loss protection — with the word TBW on the page and no figure behind it.
Best for: Filling a four-bay enclosure in one order with drives that name power loss protection and a three-year term — once the pack is back in stock.
2 TB · 2.5-inch · SATA III · up to 540 MB/s read · up to 500 MB/s write · three-year warranty ending at a written total the page never states · no MTBF · no controller named
A two-terabyte drive whose warranty is explicitly limited by a written total, and whose page never says what that total is.
Best for: A desktop machine or a laptop needing two terabytes on this interface, bought by someone who will ask for the written total before relying on the term.
