AF has fingered it. When you have your 'aspirations' identified will be the time to buy. I use a 7500 with a DA 533MHz because it can drive an ADC 20" display, and is perfectly adequate for the most demanding use that I ask of it: editing soundwaves. It functions perfectly well at 2,000,000% magnification of waveforms for manual redrawing. Your use should define your desire. My 8500 was pretty slick in 2D/3D, but made to drive a DVI display, so it has 'retired'.
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