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HD Tune is a hard disk utility which has the following functions:

* Benchmark: measures the raw performance
o Transfer Rate
o Access Time
o CPU Usage
o Burst Rate
* Hard Disk information which includes partition information, supported features, firmware version, serial number, disk capacity, buffer size, transfer mode
* Hard Disk Health
o S.M.A.R.T. Information (Self-Monitoring Analysis and Reporting Technology)
o Power On Time
* Error scan
* Temperature display
* Copy text to clipboard
* Copy screenshot to clipboard

Download it at: http://www.hdtune.com/