I'm fairly sure the want the answer "GPU core" for their first question - from the 480GTX news announcement:
Urged over and again until it appeared! In order to fulfill the demand for extreme 3D performance of hardcore gamers, internationally renowned motherboard and graphic card brand- manufacturer MSI launched today the long expecting premium graphic cards N480GTX-M2D15 and N470GTX-M2D12. Both models are built with the latest 40μm GPU coded Fermi from NVIDIA.