The folks at Bare Feats have put
together a handy look at the performance of four of the five storage options
available when custom ordering a new 27-inch iMac through Apple. These include a 1 TB and 3 TB
hard disk (a 7200 RPM Seagate Barracuda), 768 GB solid state drive and 1 TB Fusion Drive. Their results with the latter are pretty
impressive, but come with a noteworthy caveat.
In their
testing, Bare Feet found that the SSD option obviously performs best, offering
a throughput of 440 MB/s when writing large files and 477 MB/s when reading
large files. Small random transfers hit 208 MB/s when writing and 140 MB/s when
reading. By comparison, the Fusion Drive managed 325 MB/s when writing large
files and 482 MB/s when reading them (127 MB/s and 129 MB/s when
writing/reading small files, respectively). The Fusion Drive saw a substantial
(nearly 50%) decrease in transfer speed when attempting to move files larger
than the free space on the drive's "fused" SSD portion, however.
As for the
traditional hard disk options, they performed about as well as you'd expect.
You can check out the full benchmarks on Bare Feats -- a recommended read for anyone
thinking of boing built-to-order. [TUAW]
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