HD Tach will test the sequential read, random access and interface burst speeds of your attached storage device (hard drive, flash drive, removable drive, etc). All drive technologies such as SCSI, IDE/ATA, 1394, USB, SATA and RAID are supported. Test results from HD Tach can be used to confirm manufacturer specs, analyze your system for proper performance, and compare your performance with others. HD Tach is very easy to use, quick, and presents data in easy to read graphs, including the ability to compare two storage devices on screen at the same time for easy analysis.
In our read burst tests we can see that the SATA 150 MB/s spec for the Raptor X keeps it from taking the lead here as their own SE16 takes top spot with its SATA 300 MB/s connection.
Once we look at the average transfer rates, the results are much more in the Raptor X’s favor as it easily outpaces the competition. It has a 20% gain over the 74 GB Raptor and more than 59% gain over the Maxtor DiamondMax 10 drive.
Here we can see one of the results of increasing the platter density as a slightly higher access time compared to the 74 GB Raptor. It easily outpaces the rest of the 7200 RPM hard drives, however.
CPU utilization is being reported as just slightly higher with the 150 GB Raptor X but it falls with a small margin error that HDTach offers.