USB 2.0 runs a theorical speed of 480Mb/sec, which is 60MB/sec
USB 3.0 up to 5 Gb/sec, which would be something like 600 MB/sec
USB 3.0 can transfer fairly quickly 110MB/s
The VelociRaptor yielded a 105MB/sec random read rate in Computerworld’s testing and the X25-E blew by everything with a 250MB/sec peak read rate
USB 2.0 and 1.1 respectively, the slower modes still operate at 480Mbps and 12Mbps respectively and are kept to maintain backward compatibility.
fastest hard drives, which can transfer about 120MB/s, easily better than USB 2.0 and significantly better than Firewire 800
Writing lots of small files takes notably longer than writing a few large on
SSD drive lists a maximum read rate of 250MB/sec and a sustained write rate of 100MB/sec.
SSD vendors publish sequential read/write rates, which are much faster than random I/O
20 seconds to start up Windows XP for the SSD and 40 seconds for the HHD
The ATTO benchmark software showed the SSD had a read time of 244MB/sec and a write time of 172MB/sec
HDD had an average read rate of 98MB/sec and a write time of 87MB/sec.
Next I transferred a 1GB folder filled with photos and video files to the drives from a USB drive. Both the SSD and the HDD accomplished the file transfer in about 50 seconds (the Seagate was 2 seconds slower). From Here
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