OS X Lion's FileVault technology may seem to make encrypted virtual memory redundant, but maintaining encryption even with FileVault 2 enabled is likely a good idea. Topher, an avid Mac user for ...

In OS X one aspect of the virtual memory system is the disk cache, which is used to overcome the relatively slow speed of the hard drive by mirroring its filesystem blocks in memory.

Apple has publicly touted a significant new feature in OS X 10.9 Mavericks designed to maximize RAM, storage and CPU use while also boosting power efficiency: Compressed Memory.