Hi there! I was wandering which one is the best hibernate mode for my mid 2010 mbp. I read that this is the difference: 3 Default. As described above, when sleeping, contents are saved to RAM. When battery runs out, hibernate occurs. 7 Behaves as 3 but applicable only for modern Mac that uses Secure virtual memory I have no idea what "secure virtual memory" means. Do you guys know the difference? Which one is the best? Thank you!