Swapping SSDs in 13" & 15" rMBP

I'm upgrading from a 13" rMBP to a 15" rMBP w/ 16GB SDRAM. I had a 512GB SSD in the 13" and a 256GB SSD in the 15", so I decided to swap the SSD's since I'm keeping the 15" and trying to sell the 13". Since these are two different models of the rMBP, I was all ready to do a full factory restore after the swap, but then I booted the 15" rMBP and it booted just fine. Checking system information, system settings, etc... everything seems to be working right and recognizing the right hardware. Same for the 13". I had to re-authorize my iTunes, but that wasn't a big deal (and I was able to de-authorize my account from the 13" after the swap).

I'm pleasantly surprised that it all worked so easily. Does anyone know any reason why I should do a full restore?

 

I was also able to get the Boot Camp Windows partition up an running without needing to a do a full restore. All I had to do was download the Boot Camp drivers for the 15" rMBP w/ Boot Camp Assistant, boot into Windows, and then update the nVidia graphics driver. This saved me a ton of time. Hope this information helps someone in the future.

 

It's super easy to replace, if you have a torx screwdriver.

http://www.ifixit.com/Guide/Installing+MacBook+Pro+13-Inch+Retina+Display+Late+2012+SSD/12823/1

http://www.ifixit.com/Guide/Installing+MacBook+Pro+15-Inch+Retina+Display+Mid+2012+SSD/9706/1

 

OWC is a good. If you want a cheaper solution, try eBay (search for "512GB SSD Retina" or something like that). I was able to buy mine for $400. I've seen auctions go for lower.