I've seen lots of VRAM discussions for the 2012 Mac mini, but I still don't get what extra VRAM is useful for. If I was to add 16gb ram into my Mac mini, I should max out on VRAM at little over a gig... at least I would on windows. So how does this help me? YouTube videos suggest that the hd4000 would then be able to play battlefield 3 comfortably... but I'm sceptical since the mini uses the laptop cpu anyhow. So what would it actually help with?