I have a Centrino Duo T2300 with 1 Gig of Ram and loaded the demo version of
Offict 2007 Professional. I have a 15 Meg spreadsheet created in Excel 2003
which I loaded and saved it in Excel 2007. It has a number of graph tabs.
When I press a graph tab it takes almost 5 seconds to switch between tabs.
This was almost instantaneous on 2003. It this the expected performance. In
addition the the memory size increases significantly with each graph tab and
is currently sitting at over 400 Meg.