HP ENVY 14 or 15 for architecture?

I am an architecture student who uses from simple AutoCAD to Revit to serious rendering programs like Rhino +grasshopper. I tend to have multiple of these programs open and work back and forth. So I need a really really good processor. I am thinking about getting either Envy 14 or 15. Envy 14 has i5-580M whereas Envy 15 has i7-720QM. Which one would be better in my case?



Links:

Envy 14 http://h20386.www2.hp.com/CanadaStore/Pr鈥?/a>

Envy 15 http://www.futureshop.ca/en-CA/product/h鈥?/a>HP ENVY 14 or 15 for architecture?
As you are so into architecture so the best one for you is the one having larger screen ,and i am using my envy 15 which is having core i5, i bought it from here at though nice deal:



http://amzn.to/hFKcPA