AMD Ontario APU pictured,die size ~77mm^2

[kl0012]

http://www.chip-architect.com/news/ontario_vs_atom.jpg

To me it looks like cache, not cpu core.

Regards, Hans

To me it looks like a cache area (fairly regular structure).

SRAM cell size for intel's 45nm process: .346um^2
high density SRAM cell size for TSMC's 40G process: .242um^2

There are different SRAM cells for different purposes (high density/low speed, high current/high speed, single ported, dual ported e.t.c). Not sure if you compared the same.