HI all! since i been trying to get real opinions on heat and fans on the new non-retina 15" MBP these days and got quite positive info on that i went to a nearby apple store today (not a real apple retail but a premium partner) and checked out the baseline 15" non-retina MBP. I started up 4 terminals with yes > /dev/null and let it run that for 10 minutes while i checked out the retina mbp (great screen, great formfactor, but imho not THAT much better considering the price) after 10 minutes at 4x 100% CPU load (checked through activity monitor) i couldn't hear the fans, the area above the keyboard that used to be ultra hot since the first unibody came out was easily touchable and you could comfortable rest a finger there. The underside of the MBP was very warm, not yet hot. Really pleasent difference to the older modells. + I couldn't hear the fans in the store (not many people were in the store, no music was playing, if the fans were a tiny bit running i probably wouldn't have been able to make it out, it was definitly very silent) + less heat (might be possible to sit on a couch with it and rest it on your legs while doing those 2-3 things in imovie or aperture without burning yourself) i was not allowed to install any fan monitoring program (store policy), so i can't tell at what RPM the fans were going that time. I will probably get one next week after considering all other options, I'll definitly won't go for a any pre-ivybridge computers after this tryout. Hope i could help anyone with this information.