GF4改卡後是否是Quadro4，我這邊看到一個網站，有寫到
A few days ago I told you that NVIDIA will announce a new professional graphics cards family based on GeForce4 architecture and known as Quadro4 only in April (see this news story). Nevertheless, it is already possible to get a Quadro4 today. The method I am going to tell you about is based on the fact that Quadro4 solutions, just like in case of all the other Quadros, will be built using the same GeForce4 chips. The differences between Quadro4 and GeForce4 will be only in the driver support. That is why all you need to do to install the Quadro4 drivers for your GeForce4 graphics card is to change the chip ID.
應該是可以改卡的
網址
http://www.xbitlabs.com/news/story.html?id=1013385350
參考看看