Performance (5MB bench test) of the 8MB ramdisk with RamDisk file system - buffer size vs. rd/wr speed vs. "latency - buffer copy time".
Below picture with atmega1284p @16MHz and bitbanging (slow). Will be much better with DUE and its External Memory Bus (8bit static device) - I would guess 11-12MB/sec with DUE is feasible.
