OCZ Vertex 2 160GB 25nm Review (Page 6 of 9)

Page 6 - Benchmark: HDTach

About HDTach

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

We are in for another nice surprise regarding the OCZ Vertex 2 160GB 25nm. If you recall in our OCZ Vertex 2 60GB review back in November 2010 (You probably don't, this is why I linked to the corresponding page directly, haha), the sustained data rate remained at just under 180MB/s with two dips in the middle. I redid the tests today, and the results cannot be more different. This time, it hovered around the 180MB/s mark, but with a big boost to around 230MB/s in the middle. To see why, I pulled up some statistics on my 34nm Vertex 2, which is currently my boot drive, and coincidentally there is just 15GB of free space -- probably where the 10GB to 25GB range is on the graph.

To see if this is indeed the case, I cloned my 34nm Vertex 2 into my 25nm and noticed a similar pattern -- but still this does not explain why my previous benchmarks were so poor (I did it on a fresh, empty drive back then, just like this 160GB Vertex 2), but regardless of which -- I formatted the OCZ Vertex 2 60GB and ran it through HDTach again, and the results came out to be absolutely identical to the 25nm Vertex 2 160GB. And yes, I have made sure all drives are properly aligned prior to testing.

Page Index
1. Introduction and Specifications
2. A Closer Look, Installation, Test System
3. Benchmark: ATTO Disk Benchmark
4. Benchmark: Crystal Disk Mark 3.0
5. Benchmark: AIDA64 Disk Benchmark
6. Benchmark: HDTach
7. Benchmark: HDTune Pro 4.60
8. Benchmark: PassMark PerformanceTest 7.0
9. Benchmark: PCMark Vantage, Conclusion