Unlike previous Apple SSDs, the 2012 lineup sees a significant speed bump. Apple is now using 6Gbps SSD controllers from both Toshiba and Samsung, allowing it to claim support for up to 500MB/s sequential read speed. In my initial look at the Retina Display MacBook Pro's storage performance I hypothesized that the SM512E part number in my review system was a drive based on Samsung's PM830 controller (the OEM version of what's used in the Samsung SSD 830). I can now confirm that the PM830 is indeed what is used in Apple's SM512E SSD. Just as before, the SM prefix stands for Samsung. I can only assume a TS prefix will stand for Toshiba once again. Just like in previous designs, Apple runs its own custom firmware on its SSDs.
The SSD in the Retina Display MacBook Pro is technically removable, it exists on a separate PCB held in by a single screw
The dimensions of the SSD's PCB are physically different than the gumstick form factor used in the MacBook Pro, however the connector may be physically compatible with the 2012 MacBook Air SSD (similar pinout). Apple maintained a very high pin pitch on the 2011 MacBook Air SSD connector, and I had heard a number of complaints about that connector from those who have tried designing with it. It's no surprise that Apple changed the connector for this year. Keep in mind that although the interface is electrically SATA, it is not physically SATA or mSATA or any other standardized interface - this is entirely Apple's own creation. I suspect we'll see 3rd party vendors produce SSD upgrades in the future, but unlike previous Apple SSDs, performance won't be a reason to want to upgrade. Samsung's PM830 is quite honestly the best behaved SSD controller I have used under OS X, it is no surprise that Apple chose it.
Read the whole thing here:Lending further credibility to the theory that Apple tweaked Samsung's firmware for more client focused performance is the very solid showing in our sequential tests. With sufficient random IO performance, client workloads are easily bound by sequential IO - the reason being that client applications still operate under the assumption the user has a mechanical drive, which at best can deliver a couple MB/s of random IO performance.
http://www.anandtech.com/show/6005/apples-new-ssd-its-fast
Windows 8
http://www.anandtech.com/show/6008/windows-8-on-the-retina-display-macbook-pro