Disk Speed Test is an easy to use tool to quickly measure and certify your disk performance for working with high quality video! Simply click the start button and Disk Speed Test will write test your disk using large blocks of data, and then display the result. Disk Speed Test will continue to test writes and reads from your disk so you can evaluate both performance and readability over time.
Improve UI to support faster disks.
Ratings and ReviewsSee All
Essential App for every Mac!
Brilliant and essential app. Have been using it for many years now and it’s always brilliant to stress test your Mac Flash Drive every now and then to see if there is a speed drop over time or to see if FileVault slows it down. In my case, Read and Write speeds have increased with File Vault.
A new version is needed though for High Sierra and the new File System plus the super speed Flash Drives recently released.
It helped me quickly identify and resolve a bottleneck in my ageing iMac
There is no benchmark
You do not display what is a good or poor speed? This was a waste of time
Up to six family members will be able to use this app with Family Sharing enabled.