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Q3. How is SATA compared to USB and Firewire in speed? What per-
formance gain can one expect by using SATA connection?
A3: Following chart shows the specification data rate(MBps) and Overhead
among USB, Firewire and SATA.
Next table compares real world benchmark between USB, Firewire and
SATA drives:
Above data are quoted from www.sata-io.org. The performance of PHR-
100SU in your application might be higher or lower depending upon the hard
drive used, SATA and USB host and computer hardware. In our test, we
have seen over 60MB/s sequential read and write speed in SATA connec-
tion. SATA is the better choice for storage device.
USB 1394 Serial
Raw Interface
speed
480Mbps 400Mbps 1500Mbps
Benchmark
comparison
64K read
31.6MB/sec 34.8MB/sec 42.4MB/sec
Benchmark
comparison
64K write
26.5MB/sec 26.7MB/sec 56.2MB/sec
Burst
Transfer
Rate
Table: Comparison of interface speeds and data transfer
rates external disk drive interfaces
33.5MB/sec 36.2MB/sec 111.3MB/sec
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