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WD My Book Thunderbolt Duo review: Good but not really a page turner

CNET's Dong Ngo reviews Western Digital's My Book Thunderbolt Duo and finds it similar to a previous version in the company's My Book family, and a decent investment.

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If price has been your biggest concern about a Thunderbolt storage device, and it should be, then the new My Book Thunderbolt Duo from Western Digital is worth the wait.

After teasing about it at CES 2012, WD finally released the drive, and it costs about $100 less than the 2big Thunderbolt from LaCie, which offers exactly the same storage capacities and RAID support.

The new WD My Book Thunderbolt Duo comes with two hard drives that can be easily replaced.
The new WD My Book Thunderbolt Duo comes with two hard drives that can be easily replaced. Dong Ngo/CNET

Similar to the LaCie, as well as other Thunderbolt drives on the market, the My Book also doesn't come with a Thunderbolt cable, which will cost you another $50.

There is a small catch to the new drive's comparative affordability, however: it was rather slow in my testing, about the slowest among the half a dozen of Thunderbolt storage devices on the market. The reason for this is the My Book uses WD's Green hard drives, which are designed to use less energy but tend to run a little slower.

The drive is significantly faster than any other external hard drive of the same configuration that uses USB, FireWire, or eSATA. That said, it's still among the fastest external storage devices and will make quite a decent investment for those in need of Thunderbolt storage.

For more information on the drive, check out the full review of the WD My Book Thunderbolt Duo. Or if you want to see how it stacks up against other Thunderbolt drives, check out my recent roundup.