VR Zone published some details of NVIDIA's MCP77 for the AMD Griffin:
VR-Zone has learned more details about a new nForce MCP77 single-chip mGPU for AMD based notebooks coming up in March. MCP77 supports AMD Griffin processor, HyperTransport 3.0, PCI Express 2.0, DX10, SM4.0 etc. There will be 2 SKUs; MCP77H and MCP77MV where their marketing names are GeForce 9200M and GeForce 8200M respectively. MCP77H supports PureVideo HD, full HD video playback, DisplayPort, 15 USB 2.0 ports, 1 x16/6 x1 and Hybrid SLI. MCP77MV only support partial PureVideo HD, basic HD video playback, only HDMI no DisplayPort, 10 USB 2.0 ports, 1 x16/4 x1 and no Hybrid SLI.