Update 2/18/2020: Adata has reached to clarify that the Redditor measured performance with the new SSD configuration connected to the PCH and compared performance to the originally-shipping SSD connected to the CPU. This can have an impact on performance. We have also added a note regarding the disparity in the relevant section. Adata does not dispute that there is now another configuration shipping to customers.
A report has emerged that Adata has altered its XPG SX8200 Pro again by swapping in SK Hynix flash, making this the fourth known SSD configuration. As before, Adata ships this drive with the same model number as the original SSD.
Adata’s XPG SX8200 Pro was once hailed as the best SSD in its category in terms of offering the best bang for your buck. Unfortunately, the SSD also received its fair share of bad press as Adata switched out the original components for slower parts, without publicizing the change. While swapping out different types of flash certainly isn't unheard of, Adata's tactic involved swapping the SSD controller, a first. In addition to the original SX8200 Pro, our testing identified two more revisions that delivered substantially lower performance than the original SSD.
Now it appears that Adata has quietly revamped the SX8200 Pro again. Redditor svartchimpans recently purchased an SX8200 Pro that doesn't match the specs of any previous revisions we've tested. That means there could now be a total of four different variants of the SX8200 Pro. However, given the timeframe, we don't expect to find the original SX8200 Pro anymore.
As a quick recap, the original SX8200 Pro had a Silicon Motion SM2262ENG SSD controller clocked at 650 MHz with IMFT 64-layer TLC (triple-level cell) NAND. The other versions shipped with the slower Silicon Motion SM2262G controller at 575 MHz.
The type of NAND you received varied depending on the SSD lottery. Some arrived with Micron 96-layer TLC NAND, while others came with Samsung 64-layer TLC NAND. The fourth and latest variant reportedly retained the SM2262G controller but used SK Hynix's 96-layer TLC NAND.
Adata XPG SX8200 Pro Revisions
|Product||Controller||SSD Controller Clock||NAND||Flash Interface Speed|
|Adata XPG SX8200 Pro v1||SM2262ENG||650 MHz||IMFT 64L TLC||650 MTps|
|Adata XPG SX8200 Pro v2||SM2262G||575 MHz||Micron 96L TLC||650 MTps|
|Adata XPG SX8200 Pro v3||SM2262G||575 MHz||Samsung 64L TLC||525 MTps|
|Adata XPG SX8200 Pro v4||SM2262G||?||SK Hynix 96L TLC||?|
|Adata XPG SX8200 Pro v5||SM2262ENG||?||SanDisk 96L TLC||?|
The Redditor purchased his three SX8200 Pro 2TB drives at the same retailer with the same product number at different points in time. Because the model number is always listed as "SX8200 Pro," there really is no way of finding out which variant you're buying until you actually have the drive in your hands and benchmark it.
In fairness, Adata doesn't guarantee a specific SSD controller or type of flash for its SX8200 Pro. That's understandable, because companies don't always have access to all the original components to manufacture their products, and sometimes it's necessary to use substitutes.
For reference, the SX8200 Pro is rated for sequential read and write speeds up to 3,500 MBps and 3,000 MBps, respectively, and random read and write speeds up to 390,000 IOPS and 380,000 IOPS.
[Update: Adata has reached to clarify that the Redditor measured performance with the new SSD configuration connected to the PCH and compared performance to the originally-shipping SSD connected to the CPU. This can have an impact on performance and may inflate the performance delta between the two drives. As such, we have removed the screenshots of the test Redditor's test results and relevant text until further data is provided. Adata does not dispute that there is now another configuration shipping to customers.]
Synthetic benchmarks don't always paint the entire picture, and we would need to thoroughly test the new revision to see if it is slower than the other three variants.
Performance is just one side of the coin, though. It remains to be seen whether the new NAND will impact the SX8200 Pro's endurance. The SX8200 Pro is available in 256GB, 512GB, 1TB, and 2TB capacities. Adata rated the original drives with endurance ratings of 160TBW, 320TBW, 640TBW and 1,280TBW. Given that Adata hasn't modified these values in the specification sheet, we can only assume that the SK Hynix drives should be as durable as the original ones. [Update: Adata has clarified that the endurance rating remains the same.]
Switching the NAND and not rebrading the product its a A** Move Adata I hope you lose many sales because of it.
"According to the Redditor's results, however, the SX8200 Pro with Samsung 64-layer NAND (the previous revision) delivered up to 30.8% and 16.7% higher sequential read and write speeds than the latest variant that comes with SK Hynix 96-layer NAND. "
So is the new one ~30% slower, or is the old one ~30% faster? Those calculations are not equivalent.
For example, 2000MBps would be 33% slower than 3000MBps. But 3000MBps is 50% faster than 2000MBps.
"Adata ships this drive with the same model number as the original SSD "
Slower is slower, and trying to gain the same revenue.
In my opinion, they don't produce the NAND nor the controller. So they may be forced to change them because of the lack of supply. But trying to sneak it into the existing product with no indication is clearly a sly business decision. They should have created a new model so that people know the difference.
There could be alot more variant than you know.
Here is my 1TB and 2TB 8200Pro, purchased on mid of 2019 and last month respectively.
Both using SM2262ENG, but SanDisk NAND flash found in 2TB drive, which is the 5th version in your list.
When the result is a significant (negative) change in performance this should be accompanied by a change in model name, number and official performance figures.
If the changes had resulted in >20% better performance I'm sure they wouldn't ignore it in the marketing...