MacBook Pro 15" (Retina) Intel Core i7 2600 MHz Ram 16 Vs Ram 8

MacBook Pro 15" (Retina) Intel Core i7 2.6 GHz Ram 16 GB Vs Ram 8GB

It more different or same same or not too much?

And how ?

(WORK In FCPX)

I have a 2012 Retina with 8Gb RAM, and wish I had 16Gb.

Mavericks is much better at handling memory (specifically with Safari), and the system is considerably happier as a result, but I still hit RAM issues when editing. On my Mac Pro I went from 10Gb RAM to 18Gb and found FCPX considerably quicker, especially towards the end of a long working day and when running Photoshop and Motion simultaneously - the Retina is broadly comparable on raw performance but in use it's nowhere close, thanks primarily to the limited RAM.

Since the RAM in a Retina MacBook Pro isn't user-upgradable, I'd strongly recommend buying a 16Gb system from the start.

now I use Macbook Pro 15" 2.2 Ghz Ram 16 Intel SSD256
And my friend want to buy from me and another friend wanna sell Macbook 15" RETINA RAM8
I'm not sure. Is it better more then old one

what do you think?

16 GB RAM is the choice I'd make.