There’s an irony that we have to resort to using the HD Tach burst speed results as this is a figure that we stopped using in our reviews of SSD drives. The fastest SSDs have a burst speed of 250MB/s. The slower 128GB Kingston SSDNow V has a burst speed of a mere 125MB/s yet it is no slouch. We have previously concluded that burst speed gives little indication about the ultimate performance of a drive yet this is exactly where Sata 3.0 has an effect with the Barracuda XT.
With SSD Data
Without SSD Data
I/O Operations per Second
Longer bars are better
Strip out the 6Gb/s feature and the underlying performance of the Barracuda XT puts it head-to-head with the Hitachi Ultrastar. This makes the Seagate look rather expensive and relatively unattractive.
But if a 7200rpm hard drive seems to be incapable of stretching Sata 2.0 to the limit, SSD is a different story and we are keen to see the first solid-state drive with a Sata 3.0 interface.
Seagate’s Barracuda XT may be the first hard drive to use the new 6Gb/s Sata 3.0 interface, but the new technology doesn’t deliver any obvious benefit. Two terabytes of storage is welcome, but Seagate is charging a very high price. There are cheaper - and more quiet - drives out there. ®
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