not sure if there is a SATA card available that works with MorphOS, but if so, you could most likely make use of the i-RAM storage... which is RAM but used as a storage device from the OS's point of view... http://techreport.com/articles.x/9312

they also make 5.25" bay versions... http://www.ebay.com.au/itm/GIGABYTE-i-RAM-iRAM-BOX-GC-RAMDISK-FASTEST-SSD-/190666520774?pt=LH_DefaultDomain_0&hash=item2c649c38c6, so you could put several of these in pending a working SATA card for MorphOS giving you many GBs of RAM. I had tried this using an IDE to Sata adapter that I also use in my XBox.

some videos:
http://www.youtube.com/watch?v=b4jFpIt6bw8


[ Edited by zhulien 02.07.2012 - 13:13 ]