If you're on a budget, don't bother with AGP 8x.
AGP 8x is a marketing feature and doen't do very much at all. AGP 8x gives absolutely no perceptible performance increase over AGP 4x, especially in the sub-$200 price point.
What you want is a Geforce4 Ti4200 64mb. An awesome card for the price, and still a solid performer. You should be able to find one online for about $75.
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<b>Radeon <font color=red>9500 PRO</b></font color=red> <i>(hardmodded 9500, o/c 322/322)</i>
<b>AthlonXP <font color=red>2600+</b></font color=red> <i>(o/c 2400+ w/143Mhz fsb)</i>
<b>3dMark03: <font color=red>4,055</b></font color=red>