I'm a professional video editor who, like many others, waited for the illusive Mac Pro update, yadda yadda yadda. And like many others, I've been drowning in indecision about how to upgrade. I'm currently on a Mac Pro 1,1. I shoot and edit HD footage, color grade, light FX. I have read countless threads here and elsewhere on how a rMBP compares to a Mac Pro for professional uses. Professional here defined as small business, not Hollywood studio. I'm not looking to rehash the tired debate about how a laptop isn't a desktop replacement because of expandability, upgrades, etc. I'm currently producing professional HD content for clients on a 5 year old machine, so I know a rMBP can easily swing it by simply adding a thunderbolt RAID for the media. And I know the video card isn't a show stopper, not a big deal. What I hadn't heard anything about until yesterday was Intel's AVX Instruction Set (on Sandy/Ivy Bridge processors) and how it provides for better performance for FCPX on Sandy/Ivy machines, vs the older Xeon's in the Mac Pros Intel's overview: http://software.intel.com/en-us/avx/ Noted under Grand Central Dispatch on FCPX page: http://www.apple.com/finalcutpro/all-features/ Can anyone share their knowledge and/or experience with this AVX business? PS: I posted here instead of MBP forum because I thought there might be more video pros lurking about.