“ KNOWLEDGEABLE SOURCES from Taiwan claim that there are too many PCBs that are waiting for NV40 chips. Nvidia is definitely failing to provide these chips to many of its customers.
Geforce 6800 Ultra and GT PCIe are based on the good old NV40 core paired with BR2. Nvidia calls it NV45. Nvidia was happy to tell us before that Nvidia managed to overclock NV40 AGP interface from 8X to 12 X or faster. With this overclock, Nvidia managed to match the AGP8X chip speed with 16X PCIe interface and make a chip which is almost as fast as the native PCIe one.”