Source : vr-zoneThe new NVidia G92 GPU used in GeForce 8800 GT is currently engraved at 65nm whereas ATI/AMD is already using 55nm process for its current GPUs (RV770). NVidia announced its goal to move the engraving process to a thinner one in order to be bale to further increase GPU clock frequency. It could also help NVidia to increase the number of manufactured chips per wafer. The first NVidia GPU to benefit from such thinner engraving will be the chip dedicated to notebook.
[translation by Linathael]