Access time is another important measurement. It measures the time the storage unit delays to start delivering data after the computer has asked a given data. It is measured in the order of milliseconds (ms, which is equal to 0.001 s) and the lower this value, the better.

While hard disk drives have access times in the other of tens of milliseconds, solid state drives, being 100% electronic components, have an access time close to zero. All drives on both HD Tune and DiskSpeed32 achieved an access time of 0.1 ms.