HD Tune Pro
Version and / or Patch Used: 4.00
Developer Homepage: http://www.efdsoftware.com
Product Homepage: http://www.hdtune.com
HD Tune is a Hard Disk utility which has the following functions:
Benchmark: measures the performance
Info: shows detailed information
Health: checks the health status by using SMART
Error Scan: scans the surface for errors
HD Tune Pro gives us accurate read, write and access time results and for the last couple of years has gained popularity amongst reviewers. It is now considered a must have application for storage device testing.
We have both the Vector 150 and Vertex 460 240GB in the charts today with the 840 EVO 250GB just below. This chart doesn't show either of these drives in a good light, but the reason why isn't because the OCZ drives are slow.
The test uses QD1 at 64KB to read sequential data from the drive. OCZ limits the QD1 reads so users can multitask more efficiently. They keep some performance back so you can do more than one thing at a time without your system feeling unresponsive. We'll see a similar test later in this review that shows the total sequential read performance.
OCZ plays around with the QD1 write performance as well at 64KB and the average and minimum speeds don't show in the chart as accurate as we'd like. The 840 EVO on the other hand is accurate and once you get past the SLC like section, the performance drops off to just over 250 MB/s.
HD Tach - Sequential Write Performance after Random Writes
At 128KB the Vertex 450 doesn't have the same issues. This is also the block size normally associated with sequential performance. This test runs after a number of random reads and writes to the drive.
We're looking large drops in write performance. Some SSDs drop down to as low as 50 MB/s, but the OCZ Vertex 460 doesn't have the same problem.