In memory (RAM) based editing, the entire sound is stored in your computer's memory. This allows you to edit and process files very quickly. It saves time and reduces the load on your hard drive. The drawback is that the size of the files must be small enough to fit in the available memory. If you edit or record large files, Windows may start swapping memory to the hard drive, which significantly degrades performance and may cause defects when recording.

If 90% or more of physical memory is in use or if the amount of storage required by the file is more than 75% of the amount of physical memory currently available, then Hard Drive storage is used instead to preserve system stability.

Also note that in the event of a system crash, it will not be possible to recover a file stored in memory.