I have a 4,1: 2x 2.93, 48GB RAM, 512GB SSD RAID 0 on a Sonnet Tempo Pro and an HD7970 with 3GB of RAM. I'm an app developer and I've been working on bigger projects lately, my workflow is to have any or all of the following apps open for reference & work. Sketch, Photoshop, Illustrator, Xcode, Safari, Mail, iTunes, Slack, Chrome, Messages. Xcode seems to constantly choke lately (building is taking a while, auto-completing sometimes just dies all together, having multiple windows open - esp. storyboard or xib files is like a lesson in patience). Sketch since 3.4 has gotten loads better but with a lot of art boards and bitmaps it drives me crazy with beach balls. The system is really never under despair, either CPU nor memory wise though I wish it would be - it feels like it can do so much more than it's being fed. I know some of this is a) most likely some of my less than stellar code the compiler is choking on, b) Xcode itself and c) the Mac? Do you think swapping out Xeons will give me a big enough boost or do you think I should switch to the latest iMac or set some time limit for a new Mac Pro to be released?