0606Socket7742019/08/02(金) 16:14:10.30ID:hCnhFBYg Silicon Power A55 changed controller to sm2258xt, no DRAM, Bad performance when filled over half capacity, maybe 500gb - it means slc caching going to be useless. I am totally disappointed all. Silicon Power ruined all of brand name of A55 with sm2258xt. it is totally bad controller ever.