Well, obviously it depends on what you're doing with it. If you're doing video editing and things like that, the 8GB RAM build might have a bit of an hard time. But even if it's the case, I still feel like the first build did cost way too much... I looked at the prices right now, and we're looking at a $370 build, vs a $690 one... it's not even close. If it's for video editing or anything like that, just add some more RAM and it will crush the first build again.