Hi! I have Macbook 2010 320m, 4gb, C2D, 128ssd, good battery. Im happy with performance - im using it for internet, youtube, skype, sometimes CS GO. I saw that it cant play 1080p60fps yt movies. My friend have to sell Air 11 from 2013 i5, 4gb, 128ssd, hd5000 for 300£. I wanna ask you if it is a good upgrade? How about 320m vs Hd5000 in games? I wanna use Air as my main PC with monitor - do i need some cooling stand? It is very loud?