Acard = physical RAM disk.. so you should have netted some gains in your final loop times using it.
I only have 1x SSD.. so I use standard HDD's for my 32m. I am getting along good with the following:
384MB PF set
600-670 MM set depending on IC's benched
1x HDD - 18GB main partition for OS, and 18GB secondary partition for wazza
GPU drivers only
1x file move: 633MB from D->C
*RAM disk when working.. @ ~33-34MB to run SPi from
*there are a few timings that will hurt your available mem.. which will directly affect wazza times.. so be careful!