Compared to a 2009 13" 2.26 MBP, how is the GPU setup in the newest MBP release (02/24/2011) going to perform? Looking to upgrade my computer in general, but cannot take a step back in graphics because of my work (ArcGIS via VMFusion); status quo is okay. Just to make sure, also, movie playback isn't affected by this change in setup is it? Thanks to you knowledgeables that respond.