Is it possible to upgrade the graphics card in a 24" iMac, one that presumably ships with a real graphics card in it and NOT a 9400M chip?

I am sure you can upgrade the RAM and the harddrive, but I have gotten mixed information on the graphics card. My inclination at this point is that it is possible, and I'm assuming it would require a PCI-Express 2.0 for the job. Upon power requirements, however, I would not be able to contemplate or speculate.

I'm guessing not.

iMacs use "mobile" graphics cards, which presumably means that it's probably soldered to the motherboard.

(And I mean "mobile versions" of real graphics cards, not integrated ones. I have an iMac with ATI Radeon X1600...)

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