I am looking to buy a new computer for work, and I would like to hear some experiences or anything about the iMac. I have a 5 year old iMac atm, but I can't do what I need to do, it's to worn down I guess. Here are the specs I was considering, as far as I understand you can't upgrade the new iMac more than this: - 3.5GHz Quad-core Intel Core i7, Turbo Boost up to 3.9GHz - 32GB 1600MHz DDR3 SDRAM - 4X8GB - 1TB Fusion Drive - NVIDIA GeForce GTX 780M 4GB GDDR5 And here is what I need to be able to do: - Heavy 3D modelling/big projects in Autodesk Maya for up to 16 hours at a time - 3D animation - Rendering in Maya and V-Ray (easily 10+ hours at a time) - Big projects in NUKE and After Effects. Again a lot of rendering and quick view. My plan is to hook up my current 27" as an additional screen with thunderbolt, that shouldn't be a problem, right? Anyway, will this work out? Do you have any experience/know anyone who works with 3D on a mac? It's a big investment for me so I wanna spend my money wisely and I feel much more comfortable working on a mac than a PC so it's definitely worth the few extra buck for me. I would just like some reassurance that it wont go slow or crash (My current iMac can barely do 4min of rendering before crashing so I have to use other computers for that) Any help or advice is much appreciated, thanks!