workbooks having huge data set, AO possible solution?

We have recently migrated our BW workbooks from 3x to 7x and we are encountering issues upon executing workbooks having huge data set.

Upon contacting SAP and going thru Note 1411545 & 1040454 understood that there is a limitation set for 7x analyzer

Workbooks which business users are using has 98+Columns and 20,000+ Rows which makes it more than 2Million data cells OR 1.2GB Memory as
per calculation.

Can we achieve this with BO + AO (64 Bit version)?

Thanks

Abhishek Shanbhogue