Ram needed for sidescan?

I am looking to map large areas with sidescan data, what amount of ram is necessary to map 1/32 image resolution at a map size of 7000m x 7000m

I do not want to see this error anymore...
"You do not have enough memory for the current resolution setting.  Please reduce the sidescan resolution, or the size of the internal map."

The solution seems to be to use Reefmaster software instead. I have two CAD workstation videocards in the PC and it has no problem using them for graphic hardware acceleration.

I'll use Autochart for uploading maps to my Humminbird, but Reefmaster may just pull me over to Lowrance on my next upgrade.