daedalus685

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Nov 11, 2008
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Far as I know all x8 AGP cards will function in x4 mode.

The 3850 is widely regarded as the fastest:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814102730

Though the 4670 uses less power:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131161

They are profoundly over priced compared to an equivalent pcie card.

Also, drivers are not officially supported and made more or less to be nice. They could stop being hotfixed to agp whenever ati feels like it.

I have no idea what the fasted agp card designed for only x4 would be.