Sorry for the fan noise..just test a few minutes of new MacOS Sierra GM on my MBA 2010..feel so laggy but so happy with the new feature like Siri..for me I recommend for those owned Macbook below 2011, please stay on Yosemite or El Capitan..but for light use, the Sierra have no problem at all.
This my MBA specs
Core 2 Duo 1.4Ghz
RAM 2GB
SSD 64GB
Nvidia 320M
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