So I have a late 2013 iMac with 32GB of ram and 4GB video card with fusion drive. I am debating on selling my iMac and upgrading to the new 5K iMac maxed out. How much of an improvement would I notice with video editing and photo editing vs my 2013 model. I am trying to decide if I should upgrade or wait a bit. I just got a 4K Camcorder so I am getting into 4K videos.