Kingston has, after the reviews were by (and well turned out), converted from the fast, high-quality, expensive Toshiba Toggle NAND on slow, cheap asynchronous Micron NAND without the name of the SSD to change something. Thus, the board has become significantly slower, but the customer sees the (outdated) Reviews and thinks he would get a quick brand SSD. There is to a very readable article by Anandtech of 3 March 2014 just googled times.
Have for years only Kingston memory bought not anymore.
