CrystalDiskMark is a small HDD benchmark utility for your hard drive that enables you to rapidly measure sequential and random read/write speeds.
1000MB Files Test Benchmark on the ADATA HD720 500GB:
The ADATA DashDrive HE720 was able to reach 96.7 MB/s read and 103.7 MB/s write in the sequential test. Not bad performance numbers from a 5400 RPM notebook hard drive, but we are clearly limited by the hard drive and not the USB 3.0 interface with these test results.
ATTO is one of the oldest hard drive benchmarks that is still used today. ATTO measures transfers across a specific volume length. It measures raw transfer rates for both reads and writes and places the data into graphs that you can easily interpret. The benchmark was run with file sizes from 0.5kb through 8192kb with the total length being 256mb.
Benchmark Results: The ADATA HE720 500GB USB 3.0 external hard drive was able to reach 104.6 MB/s read and 94.2 MB/s write in ATTO. Not bad performance results, but they are slightly slower than the WD My Passport Edge 500GB USB 3.0 drive that we reviewed last year that was hitting 123 MB/s read and 120 MB/s write.