You are probably referring to the AMD Llano CPU's, A8-3850 and A6-3650. They are also known as APUs (Accelerated Processing Units) and are the first fruits of AMD acquisition of then-ATI. In other words, AMD's "Fusion" technology debut as the GPU is integrated into the CPU package.
It requires a motherboard with an FM1 socket, AM3 sockets are not compatible.
As I understand it, the CPU portion is not sensationally powerful, but the integrated GPU (A8-3850 has a "Radeon 6550D" built-in) beats any IGP from Intel or any other IGP.
I also hear, they tend to run hot, despite 45 nanometer transistor technology. But then, there's a full graphics core inside the CPU package, so no real surprise.
The interesting thing about the A6/A8 APU is that it can be 'crossfired' with a dedicated graphics card (6500 series) for some decent performance actually.
Needless to say, the graphics performance depends to some extent on the quality of DDR3 system memory and associated timings, as it is a shared-memory solution, as all IGP's are.
YES we are all waiting on the BULLDOZER for AM3+ socket still ...