It seems that bait n' switch is now prevalent on storage, even on SSDs

[oj88]

Tom's Hardware ran an article that certain SSD manufacturers are changing the type of NAND flash and SSD controller without informing consumers. The changes resulted in a net loss in performance, something along the lines of a 41% reduction in copy operations as well as a 500MB/s decline in light workloads. The modifications were made after the review item has gotten accolades but without applying so much as a model or SKU change, underscoring these manufacturers' intent to hide it from the public.

 

https://www.tomshardware.com/news/adata-and-other-ssd-makers-swapping-parts

[Dave]

Wow, seriously? That seems sketchy as heck. That is not a good look for ADATA. I've talked with them for years at CES. They need to get in front of this.

[nrf]

for anything I really care about I like samsung SSDs. thanks for the tip, I'll definitely read that.

[Al_Borges]

What we've learned about the WD red fiasco   is that you should be wary of weasel words in the product description and specs    '5400 performance class'  versus ' drive speed 5400 rpm'

 

Here are excerpts of datasheets from two similar m2 SSD's from Samsung and from ADATA.

what's missing from the ADATA that is present in the Samsung document?     a description of the actual components    ie controller type, Nand and dram type

 

ADATA fails to describe what you are getting.  its a marketing brochure, not a spec sheet