45 nm, PowerPC-based 3 GHz processor with four cores.
768 MB of DRAM that is embedded with the CPU, but shared between the CPU and GPU.
GPU 40 nm AMD
NOTE : The above are unconfirmed leaked info from the internet, expected release date to be 1st April 2012, which is a APRILFOOL day??? Well, that is what I found on the net, maybe they should consider to release earlier.