Hello XrX94,
I have a couple of questions in order to get more information on this project.
1.) What is the file size you are trying to export. By design exporting an incredibly huge file to one card, no matter how powerful, is going to be taxing if not impossible.
2.) Can you export individual frames instead of the movie .avi files. If this is the case, your best bet may be to export the image and compile that in a movie editing software.
There is definitely no reason why you should be running out of memory, however, depending on the answers to these questions there may be something that is happening with matinee.
Thank you,