I also would love to install using Retail OS but dell didn't give me OS. by the way, If I contact dell, how would be the answer? My system is i7 3770, 12GB RAM, NVIDIA GeForce GT 640 1GB GDDR5, and ssd.
I won't play games or editing photos, video on this computer. I will do studying, listening music, watching videos, web browsing on this one. I want my system faster and faster. So, to optimize the speed, which should be the next step of upgrade?