[Soren Skriver]

1) Can anyone here enlighten me about what is most important the GPU or the CPU when it comes to video editing, rendering and 3D in FCPX and Motion?

2) I’m looking to upgrade my iMac, but I’m not sure how to spend my hard earned money best. I do some 3D, but mostly just editing in FCPX. Will the 21″ with the following specs “suffice”: 16gb ram, 3.1QC i7, NVIDIA GeForce GT 650M with 512MB.
… or should I opt for the 27″ with the NVIDIA GeForce GTX 675MX 1GB or NVIDIA GeForce GTX 680MX 2GB.

Any thoughts?

Ps. If I had all the money in the world, I would naturally opt for the 27″ , but I am wondering if it is worth the extra cash.