Pivot Table Resouces limited by software or Ram?

[WRV]

I have an Excel 2007 spreadsheet with 19000 rows and 70 columns. When building a pivot table from this data, I start hitting resopurce limitations after I add more than seven columns of data to the pivot table.

My PC has 2GB of RAM.

Are my issues related to the amount of RAM on my p/c, or an I hitting the limitations of the Excel 2007 software?

Thank you.