Hmm, as far as i know Radeon X1600 ( or any from X1000 ) series, is working with AGP4X, and X1600 should cost something around 50$ ( though im not sure about the price, cant check right now, sorry ). Im using it for over a year now, and it works great. I remember Naquuada having one too ( X1600 Pro ), so this one works for sure.

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