Do you know how "memory compression" works?
Please, if you don't know then don't make up false claims. It is not "memory compression". Rather, it is called "memory reduplication". [...] it will not "double" your RAM
-- http://www.apple.com/osx/preview/advanced-technologies.htmlCompressed Memory.
For an even quicker, more responsive Mac.
Room to run.
The more memory your Mac has at its disposal, the faster it works. But when you have multiple apps running, your Mac uses more memory. With OS X Mavericks, Compressed Memory allows your Mac to free up memory space when you need it most. As your Mac approaches maximum memory capacity, OS X automatically compresses data from inactive apps, making more memory available.
-- http://reviews.cnet.com/8301-13727_...ression-brings-ram-doubler-to-os-x-mavericks/In OS X Mavericks, Apple has implemented memory compression features that, like RAM Doubler, compresses the RAM used by inactive programs so the overall memory footprint of a given set of open applications can be far less.
The memory compression works by a dictionary-based WKdm algorithm, and utilizes multiple cores of the system's CPU to shrink the memory usage of inactive applications by more than 50 percent.
This should allow you to get more done without the system resorting to as much memory paging, where it writes memory contents to disk in order to free up RAM for other uses.
Is 2GB RAM in a macbook air with an SSD enough to keep it useable for normal situations? I'm talking a couple programs open, ten browser tabs open, etc.
Or is 4GB kind of a minimum these days to not get a sluggish desktop?