The Inquirer reports the first batch of NVIDIA GeForce 7900 GTX and GT cards was sold out in the USA and Europe after only a couple of hours. Thousands of cards were sold and the next batch should arrive in a week or two.
If you want to order more 7900 GTX and GT chips you will have to wait a week or two before Nvidia manages to ship a second batch of the cards. 7900 GTX looks much more attractive than the 7800 GTX 512 as it draws less power and it runs much cooler.
Not to mention the fact that you can overclock it to 700 MHz easily. We also learned that you can order how many 7600 GT you want as Nvidia has a real volumes ready for its partners. It literally shipped thousands of chips and it has more.