ADATA has launched a new lineup of its XPG-series SSDs, with the new models featuring 3D MLC NAND flash and targeted at gaming PCs. The new XPG SX950 family drives use a SATA interface and on paper deliver the performance expected mainstream SSDs. The key selling point of the new XPG SX950 products will be their six-year warranty and enhanced endurance ratings.

The ADATA XPG SX950 resembles the company’s Ultimate SU900 drive announced late last year: both come in 2.5” form-factor, are based on the Silicon Motion SM2258 controller (four NAND flash channels, LDPC ECC technology, a DRAM buffer and pseudo-SLC caching support) as well as 3D MLC NAND - we presume from Micron. The XPG SX950 is a bit faster on paper as it supports sequential read speed of up to 560 MB/s as well as sequential write speed of up to 530 MB/s when pseudo-SLC caching is used. As for random performance, the XPG SX950 can perform up to 90K read IOPS and up to 90K write IOPS (see the table for details), which is a listed feature of the controller.

The key advantages of the ADATA XPG SX950 drives are their long warranty as well as endurance/reliability, which is why the manufacturer did not maximize capacities of the SSDs and left some extra memory for overprovisioning. The XPG SX950 family includes 240 GB, 480 GB, and 960 GB models.

ADATA XPG SX950 Specifications
Capacity 240 GB 480 GB 960 GB
Model Number ASX950SS-240GM-C ASX950SS-480GM-C ASX950SS-960GM-C
Controller Silicon Motion SM2258
NAND Flash 3D MLC NAND
Sequential Read 560 MB/s
Sequential Write 520 MB/s 530 MB/s
Random Read IOPS Up to 80K IOPS Up to 90K IOPS Up to 90K IOPS
Random Write IOPS Up to 90K IOPS Up to 90K IOPS Up to 85K IOPS
Pseudo-SLC Caching Supported
DRAM Buffer Yes, capacity unknown
TCG Opal Encryption No
Power Management DevSleep
Power Consumption Active: 0.82 W
Slumber: 0.41 W
Warranty 6 years
MTBF 2,000,000 hours
TBW 200 TB 400 TB 800 TB
MSRP $139.99 $249.99 $449.99

The ADATA XPG SX950 SSDs are the fastest SATA drives from ADATA that are rated for 2 million hours MTBF and featuring the longest warranty (six years). ADATA would seem to have maximized the performance of the XPG SX950 vs. predecessors and improved endurance of the products at the same time, in exchange for a small amount of space for provisioning.

The ADATA XPG SX950 SSDs are about to hit Amazon/Newegg soon and are expected to be available shortly. MSRPs for 240 GB, 480 GB and 960 GB drives will be $139.99, $249.99 and $449.99, respectively. The recommended prices of the XPG SX950 SSDs are slightly higher than the Ultimate SU900 series. Moreover, prices of the latter have dropped in retail since their announcement in 2016, so the actual difference will be even more significant initially. The slightly higher performance, improved endurance, and a six-year warranty will cost money, but it remains to be seen whether customers are willing to pay significant premiums for SATA drives today.

ADATA XPG SX950, SU800 and SU900 MSRP Comparison
  128 GB 256 GB
240 GB
512 GB
480 GB
1 TB
960 GB
2 TB
SU800 $59.99 $79.99 $139.99 $269.99 -
SU900 - $117.99 $219.99 $409.99 unknown
SX950 - $139.99 $249.99 $449.99 -

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Source: ADATA

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  • Samus - Saturday, February 18, 2017 - link

    Did nobody get the sarcasm or is it just me. I mean this ranks up there with those thanks Obama memes, which were hilarious when done creatively. Reply
  • rems - Thursday, February 16, 2017 - link

    Because this nand is new and has about 10x the life expectancy of my 960GB ssd which has a 70TB TBW and surely many other advantages. Reply
  • Laststop311 - Friday, February 17, 2017 - link

    450 for 960GB, no thanks. As others have said if you need a fast SSD get a m2 pci-e ssd if you just need data storage and are sick of the noise and poor random access and poor load times from HDD get the cheapest GB/$ SATA SSD you can as the performance difference between sata ssd's is not even noticeable in actual use even the performance difference from sata to pci-e ssd is nowhere near like the jump from HDD to sata SSD. The crucial mx500 2TB SSD can be had for 500 dollars now and is definitely what I would be using if i were to build a pc along side a 256GB optane drive for the OS and crucial productivity apps and a 1TB pci-e SSD for less important apps and my most played games. Everything else on the sata SSD. Reply
  • vanilla_gorilla - Friday, February 17, 2017 - link

    Yeah, same. The last SSD I bought (before the predicted NAND cost increase) was a 1TB Sandisk X400 for $238. I cannot tell any difference in practice of normal desktop usage between that an an m.2 nvme drives. Reply
  • husky - Friday, February 17, 2017 - link

    When the Samsung 960 Evo 1TB is $480 ($30 more than the 980GB here). This would be a tough buy for a consumer with a mobo that supports m.2. Reply
  • vladx - Friday, February 17, 2017 - link

    I expect prices to go down fast for the SX950, the only way they would stay competitive at this price is if performance is close to a 850 Pro. Reply

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