AMD Trinity could be have 2 billion of transistors

[qcmadness]

One Llano core takes 16mm2, one bulldozer mudule takes 30.9mm2, so a dual module bulldozer may smaller than quad Llano, about 10-15%, including some blank between each of the Llano core.

30.9 mm^2 includes only 1 module and 2MB L2 cache.
If you expand to 4MB L2 cache as in post #1, you will need more die space.

And in post #1, only 40 mm^2 of die space is for I/O, I doubt it if you need to include 4 PCI-E links and a dual-channel MC.