Feature：
 * Store more, compute faster, and do it confidently with the proven reliability of BarraCuda internal hard drives
 * Build a powerhouse gaming computer or desktop setup with a variety of capacities and form factors
 * The go to SATA hard drive solution for nearly every PC application from music to video to photo editing to PC gaming
 * Confidently rely on internal hard drive technology backed by 20 years of innovation
 * Enjoy long term peace of mind with the included two year limited warranty
About real capacity:
8GB = approximately 7.4GB-7.6GB
16GB = approximately 14GB-15GB
32GB = approximately 28GB-30GB
64GB = approximately 58GB-60GB
128GB = approximately 119GB-120GB


This is calculation difference between manufacturer and your PC, please Google 'Memory card capacity' to get more information.
Your PC says 1GB = 1.073741824 Billion bytes where Market Defines 1 GB = 1.00 Billion bytes.The pursuit of the perfect person is
not recommended to buy.