Cardbus VGA for better performanc​e?

   In the past, was some special designed VGA card (by the IBM, too). Some of these could connect to the PC through the cardbus interface. Anyway, I am not an engineer. So I do not know this is possible or not. But I can imagine a special cardbus VGA which can improve the standard netbooks graphical performance. The netbooks are a special part of the PCs - I know - with poor graphical performance. This is a fact. I read in an article that, about 30% of netbooks returned to the merchants because the owners were not satisfied with them. So, I think that, my imagine is not a folly. If I know well, the cardbus slot of Lenovo netbooks have PCI-E 1x interface which is equals about the speed of an AGP 8x interface. I think that, this is enough for a better graphical performance, if the GPU has real power. I think the philosophy of PCs something similar: Build your PC for what you want! I know that too, the netbooks with ION platform will arrive soon. But this is the future and many people have a netbook in the present. Maybe some of them would be happy if they could upgrade their netbooks. I like my netbook, but I could like better if I could upgrade it.  
   Sorry, for my English, I hope that was understandable what I would like to ask.

Thank you for the answer! If the spec that you are linking to is the latest then my measurements are not that far from the "typical" curve showed in figure 1. The spec that I have is more optimistic, showing a flat curve all the way up to 200kHz. The 50 dB that you are talking about is specified when the channels are used in unbalanced differential mode. This means that one signal is applied to the "shield" of the coaxial cable, giving the 5922 two differential channels. I want to verify the CMRR when two channels are used as one "real" differential channel and the CMRR for that is in figure 1. Best RegardsStefan Johansson  

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