Hmm... It seesm that the shortage of GF4 chips is due to a distributor in Europe...
A recent shortage of Nvidia GeForce4 Ti 4200 and 4600 graphics chips is
believed to have been caused by urgent orders from Europe-based distributor
Medion. According to sources, Medion asked Taiwanese manufacturers to deliver
around 400,000 Nvidia-based graphics cards by Christmas to meet rising demand.