It can be seen from the motherboard that the piece of A5X was manufactured in November 2011, we can also find the 16GB Hynix flash memory on the motherboard. iPad related: dvd to ipad converter.
Apple's first CPU is the A4 in 2010, which was equipped in the first generation of iPad, and was used in the iPhone 4.
Later, the A5 processor was first used in the iPad 2, it was upgraded to dual-core and thegraphics performance was enhanced. A5 was also used in the iPhone 4S in late 2011.
From the picture we can see that Apple will name their next generation of CPU A5X, which also verified the rumors, the iPad 3 will still be equipped with dual-core processor rather than quad-core. Something about iPad: dvd converter for ipad. However, A5X will have enhanced graphics performance.