Tom's Hardware Verdict
Premium 256GB-class SSDs are hard to come by in the post-MLC era. The 240GB Adata XPG SX8200 makes the best of the commodity components available to increase performance under more demanding workloads. This isn't a pure workstation-class SSD, but gamers and most other users will benefit from the larger SLC buffer and appreciate the $99.99 price point.
Pros
- +
Strong consumer workload performance
- +
Low cost
- +
Two software suites
- +
Included heat sink
Cons
- -
Mainstream endurance
- -
Not a true workstation-class SSD
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Features & Specifications
The Adata SX8200 NVMe SSD is the best value in mainstream SSDs we've ever tested. Adata gathered all the right pieces to deliver a righteous user experience at prices that start at less than $100. For that price, you get a 240GB drive that is far superior to any SATA SSD and is likely twice as fast as your current drive.
Capacities Rated
64-layer 3D TLC flash is coming to SSDs across the board, so most new drives in 2018 will feature identical components. There are still some standout products with astronomical performance like the Optane and Samsung Pro Series, but while the waves they create are monumental, those products are far removed from most regular computer users.
That means the SSD companies have to survive by making their similar products look extraordinary. This year, the way to stand out in the mainstream SSD market is to maximize the value of commodity parts and provide the best value.
Adata already announced three SX8200 models in 240GB, 480GB, and 960GB capacities. We spotted a 2TB SX8200 drive on display at CES 2017, so larger models are likely on the roadmap.
The SX8200 delivers up to 3,200/1,700 MB/s of sequential read/write throughput, but the specifications don't show how much data you can write to the fast SLC buffer. We'll measure that shortly. Random performance reaches as high as 310,000/280,000 read/write IOPS. Performance scales with capacity, so the 480GB SX8200 is the only model that provides the highest performance in all four categories.
Adata chose Micron's 64-layer 3D NAND for this series. Adata receives wafers and bins its own flash so it can select premium flash for its SSDs and use the lesser flash in lower-performance products.
Features
Over-provisioning is "hidden" flash capacity the drive uses to spread data writes and erases across a larger population of NAND blocks. This increases the endurance and write performance of the drive in areas you don't see on the specifications sheet. This is important to know because it's the not-so-secret source of the SX8200's performance.
Adata's SX8200 uses the same Silicon Motion SM2262 controller as the Intel SSD 760p and HP EX920, which are two competing SSDs we really like for both their performance and cost. The HP EX920 introduced a dynamic SLC buffer that grows (based on free capacity) to ingest incoming data, while the Intel 760p has a fixed buffer capacity. The Adata SX8200 also uses a dynamic buffer, but it also leverages its over-provisioning to boost performance.
Pricing, Warranty, And Endurance
Last August, we began to hear about affordable SM2262-based products coming to market, and we published details when they became available in January. Intel set the initial pricing tone with the SSD 760p, and then HP undercut that drive with the EX920.
Adata takes pricing another step lower with the SX8200. The 240GB SX8200 currently retails for as low as $99.99, and the 480GB model retails for $184.99. At the time of writing, we couldn't find the 960GB model online. We expect it to become available in the coming weeks as Adata builds larger packages stuffed with more Micron 64-layer NAND.
| Adata XPG SX8200 | 240GB | 480GB | 960GB |
| Endurance - TBW (Terabytes Written) | 160 TBW | 320 TBW | 640 TBW |
Adata matches the five-year warranty period of other premium NVMe SSDs. Like other SSDs, the warranty carries an endurance clause based on the amount of data you can write to the drive during the warranty period. Adata supports 160 TBW (terabytes written) with the 240GB SX8200 and endurance doubles with each capacity increase.
Software
Adata offers two downloadable software suites. Adata's custom SSD Toolbox enables SMART monitoring, secure erase, TRIM functions, and other miscellaneous features. Adata also provides a trimmed version of Acronis. The software allows you to clone data from an existing drive to the SX8200. This is a nice feature that allows you to install the drive without the hassle of reinstalling Windows and all your software.
A Closer Look
On the surface, the drive is essentially a reference-design SM2262 SSD. Adata's custom work went into sorting the flash and enhancing the firmware. All capacities come with the double-sided form factor that now enjoys broad support.
The XPG-branded heat sink is one feature that Adata did not pull straight out of Silicon Motion's reference design playbook. Adata includes a thin metal plate with thermal transfer tape already applied. The plate acts as a heat sink by distributing the heat from the controller to a larger surface area. You don't have to put the heat sink on, but the SSD looks a lot cooler when you do.
Specifications
| Row 0 - Cell 0 | Adata XPG SX8200 (240GB) | Adata XPG SX8200 (480GB) | Adata XPG SX8200 (960GB) |
| Capacity (Raw / User) | 256GB / 240GB | 512GB / 480GB | 1024GB / 960GB |
| Form Factor | M.2 2280 D5 | M.2 2280 D5 | M.2 2280 D5 |
| Interface / Protocol | PCIe 3.0 x4 / NVMe 1.3 | PCIe 3.0 x4 / NVMe 1.3 | PCIe 3.0 x4 / NVMe 1.3 |
| Controller | SMI SM2262 | SMI SM2262 | SMI SM2262 |
| DRAM | Nanya DDR3 | Nanya DDR3 | Nanya DDR3 |
| NAND | Micron 64-Layer TLC | Micron 64-Layer TLC | Micron 64-Layer TLC |
| Sequential Read | 3,200 MB/s | 3,200 MB/s | 3,150 MB/s |
| Sequential Write | 1,100 MB/s | 1,700 MB/s | 1,700 MB/s |
| Random Read | 200,000 IOPS | 310,000 IOPS | 310,000 IOPS |
| Random Write | 240,000 IOPS | 280,000 IOPS | 280,000 IOPS |
| Encryption | ✗ | ✗ | ✗ |
| Endurance | 160 TBW | 320 TBW | 640 TBW |
| Product Number | ASX8200NP-240GT-C | ASX8200NP-480GT-C | ASX8200NP-960GT-C |
| Warranty | 5-Years Limited | 5-Years Limited | 5-Years Limited |
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