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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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Best Buy: Apple Pre-Owned MacBook Air 11.6" Laptop Intel Core i5 4GB Memory 128GB Flash Storage Silver MD711LL/B
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Amazon.com: Apple MacBook Air 11.6" MD711LL/A Mid-2013 - Intel Core i7 1.7GHz, 8GB RAM, 256GB SSD - Silver (Renewed) : Electronics
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