Well, I don't mind trying to find out if the card can work with Maya, but if you want me to, then I'll need to know:
What version of OpenGL does Maya 8.5 use?
What version of OpenGL do you have now? (This can be usually found in Catalyst or the NVIDIA equivalent of)
Who is the manufacturer of the card?
What model is it and what GPU does it have?
Anyways, mirek, any chance that your old card was a NVIDIA Quadro?
C. P. U. Its not a big processor... Its a series of pipes!