This article is thanks to Petris Tech‘s discovery, all image credit goes to him for this article.
Back in 2019, Tom’s Hardware SSD editor Sean Webster reviewed the P34A80, at that time using a Phison E12 controller and Toshiba BiCS3 64L TLC NAND. It was one of the top performers and would still hold up well to this day. As E12 got discontinued by Phison, Silicon Power had a few variations with comparable controllers like the Phison E12S and Silicon Motion SM2262EN, combined with various 64/96l TLC NAND. It was a great recommendation in the US as it was often cheap, and featured great performance for that price… But recently a new variation came to light. Silicon Power seems to have massively downgraded the SSD while still selling it under the same name.
The main difference is in the controller. Instead of using the expected E12(S)/SM2262EN controller, the batch found here uses a Maxio MAP1001A. Maxio is a relatively small company compared to Phison and Silicon Motion, who used to be part of JMicron (not to be confused with Micron). They’ve mainly made SATA controllers and a few budget oriented NVMe controllers. When I saw this on the SSD, my expectations were already lowered.
NAND and DRAM cache
The second difference is in the NAND choice. This isn’t as dramatic as it’s been with for example the Crucial P2’s switch to QLC NAND, but still shows SP decided to cheap out with going from Toshiba to the Chinese Yangtze Memory Technologies Corp, or YMTC in short. They are a far less experienced compared to the industry giants, and were only founded in 2016.
The NAND doesn’t show anything out of the usual, featuring what is likely Samsung DRAM.
Petris Tech did take off a few basic benchmarks to show a massive performance difference. As this is potentially impacted by the older system used, these numbers should be taken with a grain of salt, but are still very useful to prove a point here.
To make a long story short, Silicon Power decided to massively downgrade their SSD to the point they can’t meet their own advertised speeds even remotely. There is no visible difference between the newer and older revisions, so for now we recommend against buying the drive as a whole.