Right heres a basic hardware question that I couldn't find an answer for from the magic of google, well here goes.

I'm lead to believe my powermac g4's grapgics is AGP X2 (Its a AGP, 450 dual core powerpc mac)

Now can I buy and use a AGP 4X Card in My machine as they are the same voltage (3v correct me if im wrong) Here's the one I was thinking of buying from dealextreme as it was cheap -> Linky!
If not could you suggest a cheap card that would work in the thing. I'm upgrading to leopard (yes unsupported style) and mabie a graphics upgrade may help a wee bit.

Cheers, Simon