Not 20nm or 22nm
Once AMD drains the potential of 32nm technology and hits the wall, it won’t go for 22nm like Intel, and instead our sources claim that the next generation Bulldozer is a 28nm part.
This won’t happen any time soon as current Bulldozer – Zambezi comes out September 19 and in 2012 it will be replaced by the Komodo eight-core CPU, again a 32nm part.
Only in 2013, AMD plans a successor based on 28nm bulk process and AMD will have to abandon Silicon on Insulator for its future chips. There are no plans that GloFo will do 28nm SOI and they even said that they don’t plan to do SOI 20nm, either.
The 28nm Bulldozer core based CPU will have the same fundamental design like Zambezi, as AMD plans to stick with Bulldozer cores for at least the next few generations. Remember, K8 was a brand new core and it lasted for years, then it was transformed to K10 and revised for AMD CPUs that we know today as Phenom II, and it is still in production in a number of designs.