i5-3340M and Intel HD 4000 or i5-4200U and Intel HD 4400 and Nvidia Geforce 820M 2Gb? Which system is better for HD video editing (basic cut, stitch, subtitles, etc.) and Photosop? Or in other words, which one is better - a 3rd gen high performance i5 CPU with a single graphic card (the Intel HD shared card) or a 4th gen low performance i5 CPU with two graphic cards (the Intel HD shared card and a dedicated Nvidia card)?