HD Tune Pro 4.01 READ / WRITE Drive Benchmark	Source: HD TUNE

HD Tune Pro is an extended version of HD Tune which includes many new features such as: write benchmark, secure erasing, AAM setting, folder usage view, disk monitor, command line parameters and file benchmark. The benchmark measures raw performance in a couple different ways to measure a hard drive for Read and Write tests, which are conducted separately. To read the results below consider that highest minimum/maximum/average transfer rates are better, while lower (quicker) access times are best. Lastly, highest burst rates are better.

HD Tune 4.01 - Read Tests Read Average Transfer Rate: (MB/s) Ranking Western Digital 1TB WD1001FALS HDD 86.1 Western Digital 1TB WD1001FALS HDD (RAID 0) 165.1 Western Digital 1TB WD1001FALS HDD (RAID 1) 86 OCZ Vertex 2 128GB SSD 233.1 Plextor PX-128M1S SSD 100.1 Seagate 2TB Barracude XT HDD 110.2 Seagate 750GB Momentus XT SSHD 90.7 Seagate 500GB Momentus XT SSHD 84 Read Access Time: (ms) Ranking Western Digital 1TB WD1001FALS HDD 12.2 Western Digital 1TB WD1001FALS HDD (RAID 0) 10.1 Western Digital 1TB WD1001FALS HDD (RAID 1) 10.2 OCZ Vertex 2 128GB SSD 0.056 Plextor PX-128M1S SSD 0.3 Seagate 2TB Barracude XT HDD 17.2 Seagate 750GB Momentus XT SSHD 0.615 Seagate 500GB Momentus XT SSHD 16.9 Read Burst Rate: (MB/s) Ranking Western Digital 1TB WD1001FALS HDD 134.4 Western Digital 1TB WD1001FALS HDD (RAID 0) 143.6 Western Digital 1TB WD1001FALS HDD (RAID 1) 144.7 OCZ Vertex 2 128GB SSD 216.8 Plextor PX-128M1S SSD 101 Seagate 2TB Barracude XT HDD 138.9 Seagate 750GB Momentus XT SSHD 155.9 Seagate 500GB Momentus XT SSHD 183.5

In HDTune' s Read Tests the 750GB Seagate Momentus XT SSHD achieves a read burst rate of 155.9 MB/s and an average read transfer rate of 90.7 MB/s. Access times are very low, 0.615ms, most likely due to the Adaptive Memory messing with this benchmark (we saw different results each test).

HD Tune 4.01 - Write Tests Write Average Transfer Rate: (MB/s) Ranking Western Digital 1TB WD1001FALS HDD 85.4 Western Digital 1TB WD1001FALS HDD (RAID 0) 161.9 Western Digital 1TB WD1001FALS HDD (RAID 1) 83.5 OCZ Vertex 2 128GB SSD 215.4 Plextor PX-128M1S SSD 73.4 Seagate 2TB Barracude XT HDD 105.1 Seagate 750GB Momentus XT SSHD 86.5 Seagate 500GB Momentus XT SSHD 80.9 Write Access Time: (ms) Ranking Seagate 750GB Momentus XT SSHD 15.8 Seagate 500GB Momentus XT SSHD 9.05 Write Burst Rate: (MB/s) Ranking Seagate 750GB Momentus XT SSHD 250 Seagate 500GB Momentus XT SSHD 177.4

The write tests in HDTune illustrate similar points with the 750GB Seagate Momentus XT SSHD. Transfer rates for the 2nd Gen. Momentus XT improve over the 1st Gen Momentus XT, as expected, thanks to the updated SATA III interface of the former. The 750GB Momentus XT achieves a very nice write burst rate of 250 MB/s and an average write transfer rate of 86.5 MB/s.