Actually forget about the FX500 it is CRAP! Terrible card for the money.
Your best bet would be to take and FX5900/5800 and Quadro softmod it. Either of those would pummel the FX500. And if you are doing anything else with the card then definitely not the FX500. In Maya 5 the difference between the FX500 and FX3000 isn't as great as in other areas where there is a huge gulf between the FX500 and other cards (including the T2).
Check with Flamethrower IIRC, I think he has a softQuadro.
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