The hard drive with SATA III connection, 2.5-inch design and 5400 rpm is basically compatible with the PS3 Fat, as it also supports 2.5-inch SATA hard drives. There is no official indication that the ST1000LM048 model is explicitly incompatible. However, there is no official confirmation from Sony or Seagate regarding compatibility with the PS3 Fat - the information is based on the technical specifications and current experience.