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I just bought a second hand macbook air 2015 11 inches (i5 4gb ram) and I'm shocked how well it runs for basic office writing and scientific data analysis use. : r/mac
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Refurbished Apple MacBook Air 7,2/i5-5250U/8GB RAM/256GB SSD/13-inch/HD 6000/OSX/A (Early - 2015) | Mac4sale
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Amazon.com: Early 2015 Apple Macbook Air with 1.6GHz Intel Core i5 (11 inch, 4GB RAM, 512GB SSD) Silver (Renewed) : Electronics
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