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Last October after months of waiting, Apple finally refreshed their MacBook Air lineup, which we reviewed shortly after launch. The update introduced a new 11.6” form factor along with a minor redesign, faster graphics, and bigger SSDs—all with cheaper prices as an added bonus. The new SSDs were fairly interesting, since Apple didn’t use normal 2.5” or 1.8” SSDs but instead introduced a whole new form factor with mSATA SSDs (also known as blade SSDs).

In iFixit’s teardown, it was confirmed that the MacBook Airs use Toshiba’s Blade X-gale SSDs. A bit over month ago, however, it was discovered that there appear to be two different revisions of SSDs circulating in MacBook Airs. The first one is obviously the Toshiba, but later user reports show that there is a second, totally different SSD. This SSD carries a model name of SM128C while the Toshiba is TS128C. The SM in the model name hints towards Samsung as the manufacturer, and Apple has used Samsung SSDs before.

http://www.anandtech.com/show/4275/a...in-macbook-air

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