ADATA Announces The XPG SX7000 Series SSDs: Up to 1 TB, M.2, PCIe 3.0 x4by Anton Shilov on April 10, 2017 8:30 AM EST
ADATA has announced its new lineup of SSDs designed to combine high-performance with 3D TLC flash memory. The new XPG SX7000 is positioned below ADATA’s flagship XPG SX8000 series, but for those looking for something more powerful than a typical SATA drive, but not ready to invest in a super high-end SSD, this is the market ADATA is aiming for.
The ADATA XPG SX7000 series lineup comes in an M.2-2280 form-factor, uses PCIe 3.0 x4 and features 128 GB, 256 GB, 512 GB as well as 1 TB capacities. Worth noting, however, that traditionally for ADATA the highest-capacity drives will be available at a later date. Just like the higher-end XPG SX8000, the new SSDs are powered by Silicon Motion’s SM2260 controller but has 3D TLC NAND (presumably from Micron).
The SM2260 is a controller we're starting to see a lot more of - as a controller it has two ARM Cortex cores, features eight NAND flash channels, LDPC ECC technology, 256-bit AES support and so on, although different drives may have different features enabled/disabled.
From a performance point of view, the ADATA XPG SX7000 drives are very different from each other due to the level of parallelism afforded by the controller/NAND combinations. For the 512 GB version, it is rated for sequential read speed up to 1750 MB/s as well as for sequential write speed up to 860 MB/s when pseudo-SLC caching is used. As for random performance, the 512 GB drive can offer up to 130K/140K 4 KB read/write IOPS. When it comes to the XPG SX7000 128 GB, the lowest capacity of the set, we are dealing with a drive capable of up to 660/450 MB/s sequential read/write performance as well as 35K/95K read/write IOPS. The drive is slightly faster than SATA SSDs based on TLC NAND, but it should offer higher endurance because 3D TLC NAND is made using larger process technologies and can account for voltage drift better.
Speaking of endurance, the XPG SX7000 come with a five-year limited warranty and are rated for 2 million hours MTBF. As for the TBW rating, the 128 GB SSD is rated for 80 TB, whereas the 512 GB version is capable of 320 TBW, which equals to around 0.3 DWPD (drive writes per day) across the warranty lifetime.
|ADATA XPG SX7000 Specifications|
|Capacity||128 GB||256 GB||512 GB||1 TB|
|Controller||Silicon Motion SM2260|
|NAND Flash||3D TLC NAND|
|Form-Factor, Interface||M.2-2280, PCIe 3.0 x4, NVMe 1.2|
|Sequential Read||660 MB/s||1370 MB/s||1750 MB/s||unknown|
|Sequential Write||450 MB/s||820 MB/s||860 MB/s||unknown|
|Random Read IOPS||35K IOPS||70K IOPS||130K IOPS||unknown|
|Random Write IOPS||95K IOPS||130K IOPS||140K IOPS||unknown|
|DRAM Buffer||Yes, capacity unknown|
|TCG Opal Encryption||No|
|Power Management||DevSleep, Slumber|
The ADATA XPG SX7000 SSDs are expected to hit the shelves in the coming weeks. Micron’s 3D TLC memory has been in mass production for several quarters now and ADATA has offered SATA drives featuring this memory for several months. As a result, the supply of 3D TLC NAND is not going to be a problem. As for pricing, expect the XPG SX7000-series to be cheaper compared to the higher-end XPG SX8000.
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