Last year I bought 2011 Mac Air for learning Objective-C. Now I’m using OSX for my main environment.
Most of the people who never use OSX thought “Mac is over prices, only the hardware is good and not support a lot of apps”.
But most of Mac users love Mac is because the OS.
You can simply use command to create a ramdisk.
diskutil erasevolume HFS+ "ramdisk" `hdiutil attach -nomount ram://512000`