Hey, I have a doubt regarding macbook. I purchased a rMBP 13" mid-2014 version with 8 gb ram. My brother has a HP Pavilion notebook with 8Gb ram as well. Right now as I am typing this, my macbook has 5.4gb memory used up as it shows on the activity monitor. I have only Safari open with 3 tabs, thats it. All the other programs are closed. My brothers windows 8 uses up only 2.5-3gb memory with similar activity. Is this normal? Do Macs use more ram than windows laptops? Stuff I do usually do with my macbook: watch movies and browse. I don't use it heavily at all. Activity monitor never showed the CPU usage over 15%.