Hi there everyone, I just upgraded from a 2012 non retina mbp 2.6 GHz (which I custom upgraded to a 512gb ssd and installed 16 gb ram), to the new top tier 2015 15" retina MacBook Pro last night. This morning is the first chance I've had to play around with it. I think it's great, very happy with my purchase especially since I got a pretty hefty discount (online store screwed up my order of a 2.8 GHz refurb, but that's a story for another thread). I used a time machine backup migrate to the new MacBook Pro and I am noticing one or two things that seem weird so I thought it might be a good idea to consult you all for unbiased advice: 1. The old upgraded 2012 Mbps had 16 gb ram, so does the new one. Right now though not doing anything hefty (infact doing nothing) the new mbp can never seem to get above 8 go of available ram. The old one on standby was usually around 11 - 12 GB ram. Lunching regular to mid load apps the new one goes down to 4gb ram, the old one would go down to 7 - 8 gb ram. Running heftier apps (cinema 4d, photoshop files with 100's of layers) old would go to 4 - 6 gb ram... I haven't really tried to stress the new one yet but I'm thinking it won't be good. Anyway this is a brand new top tier mbp, and it's had exactly the same data migrated from the old one. would any of you have a marvellous explanation as to why tasks that barely troubled my 3 year old mbp would be far more taxing on the new? 2. The fan on the new mbp runs a lot.... And high for no reason, I am looking at gmail, the fan goes nuts. I go to a website on Safari I hope back the instinct to duck as I think an Apache helicopter is about to land. Is this normal? Suffice to say I rarely heard the fan on the old Mbp, sometimes when doing intensive stuff but not all the time like on the new one. Is this normal am I being overly sensitive because I just unpacked the new mbp? 3. My old mbp was 2.6 GHz the new one is 2.5 GHz, I was assured the new one would still be much faster (even though it has .1 less) is this true or was I being sold by Apple? Any answers/advice you might have would be appreciated Thanks.