Check early topic - https://www.personal-view.com/talks/discussion/21383/story-of-idiots-adata-su650-and-su655-ssd-drives/p1
Adata’s original XPG SX8200 Pro featured Silicon Motion’s SM2262ENG NVMe SSD controller (often referred to as SM2262EN) and IMFT 64L TLC NAND flash.
Now, Adata is shipping the same SSD SKU, but with Silicon Motion’s SM2262G NVMe controller instead of the top-performing ENG model. Adata also pairs the controller with Samsung’s fourth-generation 64L TLC flash, and not the original IMFT 64L TLC.
After reviewing multiple SSDs with the same SMI controller, the SX8200 Pro stuck out as the top-performer time and time again. We didn’t know exactly why; the difference between similar products with the same controller often come from different firmwares. However, we did make an interesting discovery just a few months ago. Thanks to decoding tools, we found that most competing SM2262ENG-powered SSDs come with the controller clocked at 625 MHz, including the 256GB, 512GB, and 2TB Adata XPG SX8200 Pro samples we had on hand. However, the 1TB Adata XPG SX8200 Pro we received at launch was clocked 25MHz higher, operating at a healthy 650 MHz.
https://www.tomshardware.com/news/adata-and-other-ssd-makers-swapping-parts
Memory module maker Adata Technology saw sales of its SSD products climb over 40% on year to a record high of NT$10.77 billion (US$384.82 million) in 2020.
Adata reported consolidated revenue of NT$32.1 billion for 2020, up 25.6% on year. In addition to robust SSD shipments, rising DRAM module shipments driven by demand arising from remote work and education, and other stay-at-home initiatives amid the COVID pandemic played another driver of Adata's revenue growth last year,
This is very bad as most mainstream SSDs made by ADATA are of very low quality and unreliable.
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