Page 7 - Benchmark: HD Tach 126.96.36.199
About HD Tach 188.8.131.52
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 possible.
From: Developer's Page
While HD Tach's sequential read performance is more of a 'drag race' approach to evaluating storage performance, it still provides valuable insight into how good a drive is compared to the next. From that above, I was able to pull a very good 115MB/s at the beginning of the drive; steadily decreasing to just about 60MB/s at the end of the drive. This worked out to an average of 83.9MB/s, or about 5 to 10MB/s slower than the rest of the pack. Up until a few years ago, this would have been the performance curve of a pretty fast SATA internal desktop drive; definitely not something you would expect from an external 2.5" 5200RPM unit over USB. As you can see in our screenshot above, the tested latency was 18.1ms, which was in the same ballpark as our AIDA64 results on Page 4 of this review. I am satisfied with the performance Western Digital My Passport Wireless Pro 2TB, although we have definitely seen faster drives out there.
1. Introduction, Packaging, Specifications
2. Physical Look - Hardware
3. Configuration and User Interface; Test System
4. Benchmark: AIDA64 Disk Benchmark
5. Benchmark: ATTO Disk Benchmark
6. Benchmark: Crystal Disk Mark 3.0
7. Benchmark: HD Tach 184.108.40.206
8. Benchmark: HD Tune Pro 4.60
9. Wireless Performance and Conclusion