Iometer
A more insightful examination would be to look at what happens when the drive is bombarded with large-file-size sequential throughput and small-file random reads and writes. By doing this we can expose any weakness in the controller and NAND setup.
The drives go through an hour of preconditioning before running the Iometer benchmarks below.
Each test is run for 20 minutes after the initial preconditioning bout. Large file transfers are good on all drives, but it's the 4K random write that oftentimes trips up mid-pack rivals who fall into a steady performance state quickly. The 2TB Samsung continues to exhibit near-new performance throughout the test, and only after two hours of constant bombardment does the drive's overprovisioning capacity finally take a hit by reducing performance.