Specifications

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DAVINCI RESOLVE FOR MAC - CERTIFIED CONFIGURATION GUIDE
Some models of SSD cannot save video data at
the speed indicated by the manufacturer because
the disk uses hidden data compression to reach
these higher write speeds. This data compression
technique can only save data at the manufacturer’s
claimed speed when storing simple files or simple
data, such as blank data.
Video data includes video noise, and more random
pixel data which does not compress much, so the
true speed of the disk is seen.
Some SSD’s can have up to 50% lower write speed
than the manufacturer’s claimed speed, so even
though the disk specifications claim an SSD is fast
enough to handle video, in reality the disk is not fast
enough for real time video data capture.
Hidden data compression mostly affects capture
and often these disks can still be used for real
time playback.
The Blackmagic Disk Speed Test, a Mac OS X and
Windows 8 application, can be used to measure
accurately if your SSD will be able to handle
uncompressed video capture and playback.
Blackmagic Disk Speed Test uses data to simulate
the storage of video so you get results similar to
what you will see when capturing video to a disk.
This will let you find models of SSDs that work well
for video capture. In our testing, we have found
larger newer models of SSDs, and larger capacity
SSDs are generally faster. Blackmagic Disk Speed
Test also tests the speed of disks connected to
eSATA docks and other interfaces, which can affect
disk performance.
Disk Speed Test is installed when you install the
latest Desktop Video drivers for your Blackmagic
Design capture hardware. Disk Speed Test can also
be used even if no capture hardware is present.
Important note about Solid State Disk (SSD) speeds