I print really really huge. Since my work requires tons of layers, my Mac Pro 2010 hardly handle each PSB files. How big is it? Min 15gb and max 30gb. Yeah, it's huge. I can not open more than 3 images together since I have 32gb of ram. I used Mac Pro 2013 from my school. It's not that faster but at least it is slightly faster than mine. I wonder how to improve Photoshop performance for a huge file to edit. More cores or faster CPU? I already have 8 cores btw.