It really comes down to the sustained datarate of the actual drive itself.
Many USB3 drives actually have lower sustained datarate HHDs inside.
The USB interface is capable of very high datarates but you need the drive inside the enclosure to be able to keep up.
Pick the right USB drive with the right internal HHD and you can get great results.
Granted USB does impose some CPU overhead on the computer but with the multiple fast cores of modern machines this is almost insignificant.
At VET we edit of a range of USB3 devices (even USB memory sticks!) but we too experience issues with cheaper slower drives.
Either run a transfer speed test of look up the spec on the actual HDD to see what it can do.
Pat Horridge
Technical Director, Trainer, Avid Certified Instructor
VET
Production Editing Digital Media Design DVD
T +44 (0)20 7505 4701 | F +44 (0)20 7505 4800 | E pat@vet.co.uk |
www.vet.co.uk | Lux Building 2-4 Hoxton Square London N1 6US
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