Hey guys, not sure if this is the right thread for this but I could use some help. I currently have an 11inch early 2014 Macbook Air with 8gig ram. I run a lot of programs at once (word, excel, PPT, safari, mail...) and excel I use for massive databases. I also run an external monitor when at home and play video games (Bioshock and others). My Air is just not holding up to the task as it frequently lags when switching between applications and scrolling through large databases. My question is this: 13-inch Retina Pro with 2.7GHz dual core processor or 15-inch with 2.2GHz quad core processor (both with 256gig SSD and 16gig RAM). Im just wondering if the processor speed and graphics card difference is something that I would notice based on the way I plan on using the computer. Thanks for your help!