DiskMark - speed test for HDD, SSD, usb/pen/flash/external hard disk drive

Test the performance of your flash (pen/usb), solid state, hard disk drives in just 60 seconds.

DiskMark performs real world speed tests and shows:
+ Sequential read/write speeds which is the performance you see when copying large files.
+ Random read/write speeds which is the performance you experience when opening or using programs that read and write a lot of files to disk.

DiskMark is extremely simple to use and invaluable if you work with any USB drives (flash or external harddisks). And, a history of benchmarks lets you quickly compare your own drives.