ADATA Legend 900 Pro 1 TB: A Budget QLC Gen4 NVMe (2026)

Name: ADATA Legend 900 Pro 1 TB
Brand: ADATA
SKU: adata-legend-900-pro-1-tb
Rating: 3.6 (114 reviews)

Posted on July 16, 2026 by Raymond Chen

The ADATA Legend 900 Pro 1 TB is ADATA's entry-capacity QLC PCIe 4.0 NVMe, a DRAM-less SM2268XT2 plus YMTC QLC drive that ships with a thin bundled heatsink for PS5 and laptop upgrades.

ADATA Legend 900 Pro 1 TB: A Budget QLC Gen4 NVMe

Controller & Memory

The ADATA Legend 900 Pro 1 TB is the entry capacity of ADATA's budget PCIe 4.0 QLC line, a DRAM-less drive built on a Silicon Motion SM2268XT2 four-channel controller paired with rebranded 3D NAND that independent reviewers identify as YMTC's QLC family. The drive runs over a PCIe 4.0 x4 link on the NVMe 1.4 standard, and because there is no discrete DRAM on the PCB it leans on the Host Memory Buffer protocol to borrow a slice of system RAM for its flash-mapping tables. ADATA ships the Legend 900 Pro in a single-sided M.2 2280 module with a thin bundled metal heatsink that brings total height to 3.43 millimetres, enough to clear Sony's PlayStation 5 expansion requirement without fouling laptop slot clearance.

Within the Legend 900 Pro family, which also spans 2 TB and 4 TB siblings, the 1 TB carries the same 7,400 MB/s sequential read and 6,500 MB/s sequential write headline as the larger capacities. ADATA's datasheet rates all three sizes identically on bandwidth, and the 2 TB independent review confirmed the platform holds those numbers in CrystalDiskMark and even slightly exceeds the rated writes. Where the 1 TB differs is endurance and price: it carries the lowest 600 TBW rating in a line that climbs to 1,200 TBW on the 2 TB and 2,400 TBW on the 4 TB, the standard QLC scaling where fewer NAND dies mean fewer write cycles before the flash wears out.

Compatibility is one of the Legend 900 Pro's stronger selling points: the bundled heatsink means the drive meets Sony's PS5 expansion requirement out of the box, the single-sided PCB fits thin laptops, and PCIe 4.0 backward compatibility drops it to PCIe 3.0 rates in older slots. The direct rivals are the same tier of budget QLC and DRAM-less PCIe 4.0 drives, including the Kingston NV2, the Crucial P3, the Acer FA200 that shares the YMTC QLC plus DRAM-less recipe, and the WD Blue SN580 which is the TLC alternative in this price band. The Legend 900 Pro's real distinction is the included heatsink and the SM2268XT2 platform rather than any headline bandwidth advantage over its rivals.

Storage Comparisons:

Best Deal of 1 TB SSDs NVME Best PCIe 4.0 SSD Drive Top 2 TB SSDs

Legend 900 Pro Performance & Benchmarks

On the ADATA Legend 900 Pro 1 TB, ADATA rates sequential reads at up to 7,400 MB/s and sequential writes at up to 6,500 MB/s over a PCIe 4.0 x4 link, the same headline figures quoted across all three capacities. ADATA does not publish random read or write IOPS ratings for the Legend 900 Pro family, which is unusual for a modern NVMe drive; the only independent data point is the Funky Kit review of the 2 TB, which measured over one million IOPS in CrystalDiskMark's random test alongside over 7,100 MB/s sequential reads and over 6,800 MB/s writes, slightly above spec. ATTO on the same 2 TB sample landed at 6.64 GB/s reads and 6.37 GB/s writes, the usual small under-spec gap ATTO shows. Because all three capacities share the same SM2268XT2 plus YMTC QLC platform, the 1 TB should land in the same neighbourhood on random IOPS, though no dedicated 1 TB benchmark exists at research time.

Performance comparison

ADATA Legend 900 Pro 1 TB vs M.2 4.0 x 4 peers

Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.

WESTERN DIGITAL SN8100 1 TB: 14,900 MB/s read, 14,000 MB/s write
Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
ADATA Legend 900 Pro 1 TB (this drive): 7,400 MB/s read, 6,500 MB/s write

The honest caveat is QLC sustained-write behaviour. The YMTC QLC NAND and the SLC cache algorithm hold the rated 6,500 MB/s only while the cache has room, and once it fills the drive settles to the native QLC write rate, which on this class of drive can fall well below 1,000 MB/s and is most visible during large file transfers, video capture or bulk backup jobs. For boot, everyday desktop use and game loading the cache rarely exhausts and the drive feels every bit a PCIe 4.0 NVMe, with game load times bounded more by CPU and asset decompression than by storage. The bundled thin heatsink kept the 2 TB review sample between 35 and 70 degrees Celsius with no thermal throttling observed, and the same cooling design carries over to the 1 TB.

ADATA Legend 900 Pro vs Competitors

See how the Legend 900 Pro stacks up against other M.2 4.0 x 4 drives in our database:

Compare with rival drives:

Patriot Viper VP4300 1 TB Acer Predator GM7000 1 TB HP FX 900 Pro 1 TB

Endurance, TBW & Warranty

ADATA covers the Legend 900 Pro 1 TB with a five-year limited warranty that ends early if the 600 TBW endurance rating is exceeded, whichever comes first. The 600 TBW figure is the entry point of a family that climbs to 1,200 TBW on the 2 TB and 2,400 TBW on the 4 TB, scaling with capacity under the YMTC QLC endurance profile and confirmed in the ADATA datasheet that Funky Kit reproduces. At a typical consumer write workload of around 20 GB per day the 1 TB would need roughly 82 years to exhaust the NAND, so in practice the warranty term expires long before the flash wears out; even a heavier 50 GB-per-day routine still clears 32 years. ADATA rates the drive at up to 1.5 million hours MTBF, but that figure is a population-reliability statistic describing expected failures across a large fleet, not a lifespan guarantee for any single unit.

ADATA Legend 900 Pro 1 TB Specifications

Category	Value
Capacity [?]	1 TB
Interface [?]	M.2 4.0 x 4
Controller [?]	Silicon Motion SM2268XT2
Memory type [?]	YMTC QLC
DRAM [?]	HMB
Read speed (MB/s) [?]	7400
Write speed (MB/s) [?]	6500
Read IOPS [?]	0
Write IOPS [?]	0
Endurance (TBW) [?]	600
MTBF (million hours) [?]	1500000
Warranty (years) [?]	5

Verdict: Is the Legend 900 Pro Worth It in 2026?

Buy the ADATA Legend 900 Pro 1 TB as a budget boot, everyday and game-library drive in a PCIe 4.0 desktop, laptop or PlayStation 5 where the bundled heatsink clears the PS5 requirement out of the box and the low asking price matters more than peak sustained writes. Skip it for a video editing scratch disk, a constant large-file ingest workload, or any build where the QLC NAND's drop past the SLC cache will be felt during sustained transfers. The stronger alternative in the same tier is a TLC drive like the WD Blue SN580 1 TB, which holds sustained writes better for similar money, or stepping up to the 2 TB Legend 900 Pro, which doubles endurance to 1,200 TBW for a relatively small price jump. The verdict on the ADATA Legend 900 Pro 1 TB is a competent, no-frills QLC NVMe whose real draw is the included heatsink and the budget price rather than any performance distinction.

+ Pros

7,400 MB/s sequential reads on PCIe 4.0
Bundled thin heatsink included in box
Single-sided M.2 2280 fits laptops and PS5
DRAM-less SM2268XT2 with YMTC QLC NAND
Five-year warranty, TBW-limited
Family scales up to a 4 TB capacity
NVMe 1.4 with HMB and LDPC error correction

- Cons

QLC NAND drops sharply past the SLC cache
600 TBW is the lowest endurance in the line
No DRAM cache, relies on host HMB
ADATA does not publish random IOPS ratings
Sustained writes fall well below TLC rivals
1 TB has no dedicated independent review

3.6 / 5 · 114 votes

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Video Review

ADATA Legend 900 2TB SSD Review: Speed Meets Performance

Frequently Asked Questions

It is adequate for gaming, though it is not the drive a performance-focused builder would pick first. The ADATA Legend 900 Pro 1 TB hits 7,400 MB/s sequential reads on PCIe 4.0, which is plenty of bandwidth for game loading, and the bundled thin heatsink keeps temperatures in check during long sessions. In practice, game load times are usually bounded by the CPU and asset decompression rather than storage, so the gap between this drive and a faster PCIe 4.0 model is small in most titles. The real limitation is capacity rather than speed: 1 TB holds only a handful of modern AAA games, so a larger drive is the better gaming investment if the budget allows.

It does, and the bundled heatsink handles Sony's requirement out of the box. Sony recommends an M.2 NVMe SSD with at least 5,500 MB/s sequential reads and dimensions within 110 by 25 by 11.25 millimetres including a heatsink, and the ADATA Legend 900 Pro 1 TB clears both: it reads at 7,400 MB/s and the included heatsink brings total height to 3.43 millimetres, well under the 11.25 millimetre ceiling. The console's expansion slot is PCIe 4.0, so the drive runs at full speed rather than being capped to PCIe 3.0. The honest constraint is capacity, since 1 TB fills quickly when modern games regularly pass 100 GB each, so a 2 TB drive is the more sensible PS5 upgrade.

The ADATA Legend 900 Pro 1 TB carries a 600 TBW endurance rating, the entry point of a family that scales to 1,200 TBW on the 2 TB and 2,400 TBW on the 4 TB, confirmed in the ADATA datasheet. At a typical consumer workload of around 20 GB of writes per day, the drive would need roughly 82 years to exhaust the NAND, so the five-year warranty term expires long before the flash wears out. The 600 TBW figure matters most for buyers running heavy write workloads like video capture, large database writes or daily bulk file transfers, where a larger-capacity drive with a higher TBW rating would be the safer long-term choice.

It does not. The ADATA Legend 900 Pro uses a DRAM-less design built around Silicon Motion's SM2268XT2 four-channel controller, and instead of a discrete DRAM chip it relies on the Host Memory Buffer protocol to borrow a small slice of the system's RAM for its flash-mapping tables. This is a common cost-saving choice in budget PCIe 4.0 drives and has little practical impact on everyday reads, boot times and game loading. The trade-off shows up under heavy sustained random writes, where a DRAM-less drive can fall behind a DRAM-equipped model; for a 1 TB boot and everyday drive the HMB design is fine, but it is part of why the Legend 900 Pro sits in the budget tier rather than the performance tier.

No, not on sequential bandwidth. ADATA rates all three capacities of the Legend 900 Pro family at the same 7,400 MB/s sequential reads and 6,500 MB/s sequential writes, and the independent Funky Kit review of the 2 TB confirmed the platform holds those numbers in CrystalDiskMark, even slightly exceeding the rated writes at over 6,800 MB/s. Where the 1 TB does differ is endurance: it carries the lowest 600 TBW rating against 1,200 TBW on the 2 TB and 2,400 TBW on the 4 TB, the standard QLC scaling with capacity. ADATA does not publish per-capacity random IOPS, so the only data point is the 2 TB's measured over one million IOPS, which the 1 TB should approach on the same SM2268XT2 plus YMTC QLC platform.

No extra heatsink is required, because the drive ships with one in the box. The ADATA Legend 900 Pro includes a thin metal heatsink that brings the module's total height to 3.43 millimetres, enough to satisfy Sony's PlayStation 5 expansion-slot requirement and to keep the drive cool under typical desktop and laptop loads. In the Funky Kit review of the 2 TB, temperatures ranged between 35 and 70 degrees Celsius with no thermal throttling observed, well below the 85 degree ceiling for consumer NVMe, and the same cooling design applies to the 1 TB. Buyers who already have a motherboard M.2 heatsink can remove the bundled one, since the bare module is just 2.15 millimetres tall and fits even tighter laptop slots.

The ADATA Legend 900 Pro uses Silicon Motion's SM2268XT2 four-channel NVMe controller paired with rebranded 3D NAND that independent reviewers identify as YMTC's QLC family, a DRAM-less combination running over a PCIe 4.0 x4 link on the NVMe 1.4 standard. The Funky Kit review of the 2 TB confirmed the SM2268XT2 and YMTC QLC identification after removing the heatsink, matching the ADATA datasheet's controller listing and the drive's sustained-write behaviour. The SM2268XT2 is Silicon Motion's value-tier DRAM-less PCIe 4.0 controller, and the YMTC QLC NAND trades raw sustained write speed and endurance per gigabyte for low cost and high density. This controller-plus-NAND recipe is what defines the Legend 900 Pro's performance profile across all three capacities.