Download - Blackmagic Disk Speed Test For Windows =link=

Click the button (gear icon with play symbol).

Check your USB or Thunderbolt port.

(optional but useful):

Run the downloaded .exe installer.

Your drive may have bad sectors or is disconnecting under load. Check Windows Event Viewer for "Disk" errors. Run the test with a smaller file size (e.g., 500MB instead of 4GB). blackmagic disk speed test for windows download

: Similar to Blackmagic, this tool focuses specifically on video production performance and is available as a standalone Windows installer. Blackmagic Disk Speed Test - App Store Click the button (gear icon with play symbol)

Results are also shown as video format ratings (e.g., "1080p60", "4K DCI 60p") indicating if your drive can handle those video streams. blackmagic disk speed test for windows download