EFD Software's HD Tune is described on the company's web site as such: "HD Tune is a hard disk utility with many functions. It can be used to measure the drive's performance, scan for errors, check the health status (S.M.A.R.T.), securely erase all data and much more." The latest version of the benchmark added temperature statistics and improved support for SSDs, among a few other updates and fixes.
Once again, we see the Samsung SSD 840 EVO series drives putting up best-of-class scores. Please note that numbers with RAPID enabled are also located in the graphs above. You'll notice that enabling RAPID resulted in modest increases is write performance, and big gains in access time, though CPU utilization went up a bit.