CrystalDiskMark is a small HDD benchmark utility for your hard drive that enables you to rapidly measure sequential and random read/write speeds.
100MB Files Test:
Benchmark Results: With CrystalDiskMark v3.0 run with a file size of 100MB we got sequential read and write numbers that were on par with what we saw in the other tests. We hit 166MB/s on the sequential read and 148MB/s on the sequential write test.
100MB Files Test Comparison Chart: The WD VelociRaptor 600GB HDD looked solid on the sequential tests, but the performance wasn’t awe inspiring in the 4K read/write tests.