Stefan Mileschin

Over the Thanksgiving break the intrepid crew over at Chipworks sent over their initial teardown information for Apple’s A9X SoC. The heart of the recently launched iPad Pro, the A9X is the latest iteration in Apple’s line of tablet-focused SoCs. We took an initial look at A9X last month, but at the time we only had limited information based on what our software tools could tell us. The other half of the picture (and in a literal sense, the entire picture) is looking at the physical layout of the chip, and now thanks to Chipworks we have that in hand and can confirm and reject some of our earlier theories.

A9X is the first dedicated ARM tablet SoC to be released on a leading-edge FinFET process, and it’s being paired with Apple’s first large-format tablet, which in some ways changes the rules of the game. Apple has to contend with the realities of manufacturing a larger SoC on a leading-edge process, and on the other hand a larger tablet that’s approaching the size of an Ultrabook opens up new doors as far as space and thermals are concerned. As a result while we could make some initial educated guesses, we’ve known that there would be a curveball in A9X’s design, and that’s something we couldn’t confirm until the release of Chipworks’ die shot.

http://www.anandtech.com/show/9824/m...apples-a9x-soc