HD Tach is a low level hardware benchmark for random access read/write storage devices such as hard drives, removable drives (ZIP/JAZZ), flash devices, and RAID arrays. HD Tach uses custom device drivers and other low level Windows interfaces to bypass as many layers of software as possible and get as close to the physical performance of the device as possible.
The Old VelociRaptor 300GB Drive Performance Results:
The New VelociRaptor 600GB Drive Performance Results:
Benchmark Results: The WD VelociRaptor 600GB HDD was able to reach 129.9MB/s read and 111.9MB/s write. The random access time was at 6.8ms and the burst speed was 334MB/s thanks to the SATA 6Gbps controller support!
Comparison Chart: Compared to other popular SSDs the WD VelociRaptor 600GB HDD couldn’t keep up, but it was significantly faster than the older 300GB version that it replaces. In fact it was ~16% faster on average write and ~23% faster in the average read tests!