Read/Write speed of Seagate Momentus XT 500GB hybrid hard drive

The Seagate Momentus XT 500GB hybrid hard drive (4GB SSD, 500GB HDD) is a useful way to speedup system boot and execution. However, on brand new files the speed is the same as a typical hard drive. I plugged the new drive into my Kingwin Dockmaster USB 3.0 adapter to see what the drive could do over a USB 3.0 link, using Disk Utility on Ubuntu 12.04.

Seagate Momentus XT Hybrid HDD benchmark
Seagate Momentus XT Hybrid HDD benchmark.

The average read speed of the Seagate Momentus XT was measured to be 90MB/sec.

The average write speed of the Seagate Momentus XT was measured to be 97MB/sec.

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