Blackmagic Disk Speed Test

Not comprehensive because it doesn't show all compression ratios for BM Raw, or ProRes 422, etc. but it's a nice way to compare disk speeds and get an idea as to whether a drive will support the camera resolution that you want to use. I still recommend trying out a drive to verify.

dishishjonThu, Mar 16, 2023

United States

This is what I get three quarters into the test on every different external drive I tried using it with. Its not worth my time

Reapster3Sun, Mar 12, 2023

United States

Seemed to work at first. Ran read and write tests a few consecutive times then froze my Mac hard. Force close didn't work, restart didn't work...ended up uplugging the ssd without ejecting (beacuse eject wouldnt work either) to get it to sort of respond.

Improvement ideaFri, Mar 10, 2023

United States

With SSD's reaching multi GB/s transfer rates in 2023, please add 100GB and 500GB stress tests as options. Thank you.

Mr. CJDSat, Feb 4, 2023

United States

I think the choice to let the app run tests continuously, and never complete is a weird choice. Maybe it's because I'm used to the Ookla speed test and CrystalDiskMark. Maybe I haven't figured out the workflow advantage of having it run indefinitely. Either way, the fact that I find it a little odd has nothing else to do with the functionality of the app. It seems very good. I am running it on OS 13.1 on

good / strangeMon, Jan 9, 2023

United States

This app is worthless. What's it doing? What does it do? No idea. Interface is confusing. Website has no help. No support or documentation or instructions anywhere.

jAppleiTunesMon, Dec 26, 2022

United States

I really do not understand all of the negative reviews. I wanted to see the speed difference on various drives using various interfaces. This gave me the information I needed for free. The app does exactly what it says it will do in the product description.

Zig2112Fri, Dec 2, 2022

United States