Kingston SSD 120GB/240GB/480GB/960GB SATA III 2.5 Solid State Drive lot
Capacities:120GB,240GB,480GB. 480GB-up to 500MB/s Read and 450MB/s Write. 240GB-up to 500MB/s Read and 350MB/s Write. 120GB-up to 500MB/s Read and 320MB/s Write. It is calculation difference between manufacturer and your PC.