Hello everyone! I have a 2012 13" 1.8ghz i5 Macbook Air and a 2013 13" 2.6ghz i5 Macbook Pro Retina. Both have 8gb ram. My normal usage is having Safari open (one tab, maybe two), Airmail, and Microsoft Word. I've noticed that while the Air has approximately 3-4gb of ram free during this usage, the Retina Pro only has 1.5-2.5gb free. I have tried the pro at different screen resolutions and the amount of free ram stays about the same. I am just curious if anyone else has similar results, and why the drop in available ram for the same tasks over the two different machines. Thanks!