Erasure time

  • The erasure time changes significantly, depending on the erasure method, the PC's hardware specification and the hard disk's connection mode. This example should be used only as a guide.
  • If the hard disk has a lot of hardware troubles(bad sectors), the expected erasure time might be inaccurately, and the erasure time might be long greatly.
  • If two hard disks are connected to each IDE controllers(one is connected to Primary and the other one is connected to Secondary), Disk Shredder 4 erases the two hard disks' data at the same time(theoretical erasure speed is about twice).
Erasure time (random numbers, once writing) <reference>
example PC1 example PC2 example PC3 example PC4
Disk capacity/
Connection type
80GB/IDE 250GB/SATA 400GB/SATA 500GB/SATA
CPU Intel Pentium4 2.4GHz AMD Athlon X2 2.5GHz AMD Athlon X2 2.5GHz Intel Core i3 2.93GHz
RAM 512MB 1GB 1GB 2GB
Disk Shredder 4
Erasure time
53min.
39.8sec/1GB
1 hour 37min.
23.3sec/1GB
1 hour 54min.
17.1sec/1GB
2 hours 18min.
16.6sec/1GB
Disk Shredder 3
Erasure time
2 hours 47min.
125.3sec/1GB
5 hours 8min.
73.9sec/1GB
11 hours 59min.
107.9sec/1GB
16 hours 10min.
116.4sec/1GB