SiSoft SANDRA Read & Write
Testing began with SiSoftware's SANDRA XII, the System ANalyzer, Diagnostic and Reporting Assistant. Here, we used the Physical Disk test suite and provided the results from our comparison drives. The benchmarks were run without formatting and read performance metrics are detailed below. We also included SANDRA's graph so you are able to see how the drive performs over time along with the average rated result.
The Seagate Barracuda XT put up the best read performance scores according to SiSoft SANDRA, by a new megabytes per second, at least. The move from SATA 3G to SATA 6G, however, had little affect on performance.
Write performance was a whole different story. Here, with the Barracuda XT was connected to a SATA 6G controller, it actually performed slightly lower than when connected to SATA 3G. And the WD RE4 drive put up the best write score.