BenchMark Drive

Could someone please shed a little light on this function of "Benchmark Drive" in defraggler ? I've searched around your site and can't seem to find a morsel. I'm having no issues just seeking information. Thanks for any info.

It calculates your disk performance and shows a result like "Random Read Speed: 2.52 MB/s ".

I would think it could be used as a before and after defrag comparison.

I'm not sure about its full use but that's the basic function.