I can't find any 3.3v signal support for the 9600 series. To top that off, a couple members have tried it and not even had their card FIT! Take a look at <A HREF="http://www.tomshardware.com/graphic/20030416/radeon_9600-01.html" target="_new">These Images</A> and notice the AGP 1.0 slot is even missing from the card!
My guess is it's because the .13 micron chip supports lower I/O voltages, and it would cost the companies more to work out signal amplification hardware.
At any rate, AGP2x isn't that bad, my Celeron 1100@1466 system ROCKED HARD using a Radeon DDR. And he's looking at the Asus V7700 Pro, which is a GeForce2 card, not impared by AGP2x. Further, AGP2x still has 100% more bandwidth than PCI, plus the other AGP benefits, and if you compare cards like the Radeon 9100 AGP to the Radeon 9100 PCI you only see a maximum 30% difference IIRC.
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