USB 3 devices can use up to 900mA of power (compared to 500mA used by USB 2 devices). Thunderbolt 3 and USB C use the same cable. USB-C and Thunderbolt 3: Here's everything you need to know - CNET Oct 2016 Typical Sustained Data Transfer Rate (STR): The Best External Desktop Hard Drive | The Wirecutter Dec.
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My 2017 tests reading a 18 GB file and USB 3 on a 2.89 GHz MacBook Pro with SSD StorageĦ4 GB SanDisk Ultra Fit memory stick USB 3.0 - 152 MB/sīest hard drives and storage devices of 2016 - CNET With 128 GB flash drives claiming to have 300 MB/sec transfer rates for $80 what is the best choice? One explanation I saw was that the power provided on the thunderbolt cable was not enough to optimally power the electronics in the drive. Thunderbolt should be a lot faster (1.2 GB/s max) than USB 3 (640 MB/s max), but in real world testing there is not much difference. With a SSD (Solid State Disk) Thunderbolt was faster (188 MB/s vs 167 MB/s Read) USB 3 and Thunderbolt 2 were about the same (115 MB/s) with a HDD (Hard disk) How fast is USB 3.0 really? | Macworld they found the following: USB has more overhead than firewire, so a USB 2 (480 Mbs) will actually be slower than a firewire 400 (400Mbs). Sustained Data Transfer (SDT) rates.Īctual speeds will be slower than maximum interface specs because of the protocol overhead and extra bits (start bit, stop bit. I suppose if you think you might need to boot and run off of an external backup drive it would be important also, but failure rates of internal drives are so low now most people are not worried about this. See Hard-Drive Solutions for Video-Editing Studios | B&H Explora The main need for high speed external storage is for video editors working on large files requiring a lot of data transfer. HDD (Hard Disk Drive) vs SSD (Solid State Drive) External Hard drives Don's Home Products External Hard drives
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