In the case of the Asus W1N and M6BNe, upgrading the GPU from 9600 to 9700 or from 64MB to 128MB is suprisingly simple, but still impossible for end users. There is no "board" to speak of. There is only one GPU soldered onto the motherboard. How does that make it simple, you ask? Well, this isn't a discrete GPU. It is a chip-on-chip package that puts the memory and GPU itself onto one chip. The 64MB versions of these chips have the 4 16MB chips soldered onto the GPU, and the 128MB versions have 4 32MB chips. And all these new ATI chips are pin-compatible. The 9600 with 64MB, 9600 with 128MB, 9700 with 64MB, and 9700 with 128MB could theoretically fit onto the same board. If you have the means to unsolder a GPU, then you already have half of the problem taken care of. The other half, however, involves acquiring one of these chips. Apparently they are not sold to end users.