So just for fun I decided to make 2 RAMDISKS on my MacPro and see how fast I could move a file between them. Picked a HB'd movie of Seabiscuit (1.16GB) and moved it over from my Hard Drive to ramdisk1, took 5 seconds, squeezed out just shy of 200MB/s with my RAID0 (2 Samsung F1). Using the new screen record of Quicktime X I decided to record just how fast I could move the file from ramdisk 1 to ramdisk 2... 405MB/s, took 2.5 seconds to move the file. YouTube HD Even though it's HD, it's still hard to see since my original is a 1680x1050 Screen Capture. If you'd like to download the original QT file, Click Here. So, what does all this mean? Well, seeing as a RAMDISK will be erased the second the power goes off on the machine or you eject the drive, it doesn't mean a whooole lot. It was just a lot of fun. Other than setting them up for a scratch disk for PS, I don't know what you could really do that would make a effective use of that speed. ----- If you'd like to give this a whirl yourself, just enter this code into Terminal: Code: diskutil erasevolume HFS+ "ramdisk" `hdiutil attach -nomount ram://1165430` 1165430 = 550MB 2330860 = 1.18GB To make a few of them, just give each one a different name.