there used to actually be ram drives but they were like ddr 1, it is possible AFAIK but the ram you use doesn't store data long term and requires power 24/7 or it will loose it's memory and idk if it has a degrading curve so the data on it might only last a specific and short period of time. The advantages i see in this idea is that AFAIK RAM chips don't degrade over time and loose performance like an ssd does, even with TRIM on an SSD only has a limited number of read/writes before it dies while ram is re-written billions of times over it's life cycle. Also provided a faster connection it should be much faster, single channel bandwidth is 12.8 and dual channel is 25.6, not sure how fast the RAM itself is but if they made an E-ATX board with the actual mobo being mITX then you could get decent storage at unbelievable speeds. The challenge though is obvious, coordinating the data and finding a way to get it stable, pretty sure a 64 way RAID 0 would be very difficult to do, it'd probably need its own processor on the board to control it and process the data given to it into a single usable string being sent.