I currently have a mid 2010 MBP with an external 22'' display connected. Having the display connected puts quite some load on the GT 330M and the fans are always running at 6000rpm, even when I'm just watching YouTube or browsing reddit. Which is annoying. However, I will buy a rMBP in the very near future and I was wondering what the fan noise would be like if I connected the same display to that rMBP. Since the GT 650M is more powerful I would assume the fans run much slower, yes? Does anyone have a setup like this and could confirm that? And what about clamshell mode, is the fan noise within expectable limits with the lid closed? Thanks guys!