ServerMB with 32G system Ram and 64 Bit operating system is the best solution (about $1000) 800+MB/s

http://www.tyan.com/product_board_detail.aspx?pid=163

All the rest will work in 32 bit OS:

Next up is RamDrive 16G (about $800) [thanks to Aboron] 400MB/sec

http://www.acard.com/english/fb01-pr...&type1_idno=13

Then we have SSD, there are many posts in this forum for links. About $100-$300 150MB/sec

And finally HDD $190 for 1.5TB 120MB/sec?

http://www.hardforum.com/showthread.php?t=1347084

Takes yur choice