MacBook Air SSD upgrade provides big storage, mixed speed result

Once the storage upgrade was installed, we found the added capacity to be a blessing, but our performance results were unexpectedly mixed. The marketing materials for the Mercury Aura Pro Express claim that the drives offer up to 68 percent faster performance than the stock flash storage. In order to see such a vast a difference between the MacBook Air’s flash storage and the Mercury Aura Pro Express, we had to use automated tests that task the MacBook Air in ways that most people wouldn’t use an ultra-portable.

In conclusion, the only reason you’d need to buy a Mercury Aura Pro Express SSD is for additional storage, and not necessarily for the advertised performance benefit. The upshot is that the SSD is ridiculously simple to replace (OWC includes a pentalobe screwdriver with the purchase). While expensive, OWC sells 320 GB and 480 GB capacity drives that cost $1,096.99 and $1,499.99 respectively. This is on top of an already pricey MacBook Air purchase, and unless you really need those extra gigabytes, I don’t know if the cost of entry is justified. Where OWC’s solution might have the advantage, however, is in longevity. The company claims that their SSD solution maintain their write speeds over a prolonged period of time thanks to their wear-leveling technologies. OWC’s Mercury Aura Pro Express SSDs are one of the only upgrades you can pimp your MacBook Air out with, but before you make that purchase, I’d consider reading James Galbraith’s in depth review for all the hard numbers.