I have a Macbook I gifted to a very good friend, an 11-inch Macbook Air since it's first release. Its been a while, and at times she tells me the speed is a little slow with all the tabs. I thought this year, I would give her a birthday present and surprise her with a new Macbook 12-in. She does not use the computer much for any heavy lifting, just to browse the net and watch videos on it. Is the new Macbook 12-in: https://www.apple.com/shop/buy-mac/macbook/silver-256gb The Macbook Air 11-in: https://www.amazon.com/Apple-MacBook-MD711LL-11-6-Inch-VERSION/dp/B00746YZS6 Without any upgrades, is the Macbook 12-in of today faster than the 11-in Macbook Air? Is there noticable speed/performance improvement for browsing the web and youtubing?