SSD and USB 3.0 Performance of the Retina Display MacBook Pro
 

Two major upgrades offered to all of Apple's new MacBook lineup are updated SSDs and native USB 3.0 support. The same updated SSD is present across all of Apple's lineup: from the MacBook Air to the next-gen MacBook Pro. Based on the model number in Apple's System Report I'd guess my review sample features a Samsung based drive. Toshiba was a secondary source in the past, and with its announcement of a 6Gbps controller I wouldn't be surprised to find that in systems as well.

http://www.anandtech.com/show/5997/s...ay-macbook-pro